<?php
/**
 * XML-RPC protocol support for WordPress
 *
 * @package WordPress
 * @subpackage Publishing
 */

/**
 * WordPress XMLRPC server implementation.
 *
 * Implements compatibility for Blogger API, MetaWeblog API, MovableType, and
 * pingback. Additional WordPress API for managing comments, pages, posts,
 * options, etc.
 *
 * As of WordPress 3.5.0, XML-RPC is enabled by default. It can be disabled
 * via the {@see 'xmlrpc_enabled'} filter found in wp_xmlrpc_server::login().
 *
 * @since 1.5.0
 *
 * @see IXR_Server
 */
class wp_xmlrpc_server extends IXR_Server
{
    /**
     * Methods.
     *
     * @var array
     */
    public $methods;

    /**
     * Blog options.
     *
     * @var array
     */
    public $blog_options;

    /**
     * IXR_Error instance.
     *
     * @var IXR_Error
     */
    public $error;

    /**
     * Flags that the user authentication has failed in this instance of wp_xmlrpc_server.
     *
     * @var bool
     */
    protected $auth_failed = false;

    /**
     * Registers all of the XMLRPC methods that XMLRPC server understands.
     *
     * Sets up server and method property. Passes XMLRPC
     * methods through the {@see 'xmlrpc_methods'} filter to allow plugins to extend
     * or replace XML-RPC methods.
     *
     * @since 1.5.0
     */
    public function __construct()
    {
        $this->methods = array(
            // WordPress API.
            'wp.getUsersBlogs' => 'this:wp_getUsersBlogs',
            'wp.newPost' => 'this:wp_newPost',
            'wp.editPost' => 'this:wp_editPost',
            'wp.deletePost' => 'this:wp_deletePost',
            'wp.getPost' => 'this:wp_getPost',
            'wp.getPosts' => 'this:wp_getPosts',
            'wp.newTerm' => 'this:wp_newTerm',
            'wp.editTerm' => 'this:wp_editTerm',
            'wp.deleteTerm' => 'this:wp_deleteTerm',
            'wp.getTerm' => 'this:wp_getTerm',
            'wp.getTerms' => 'this:wp_getTerms',
            'wp.getTaxonomy' => 'this:wp_getTaxonomy',
            'wp.getTaxonomies' => 'this:wp_getTaxonomies',
            'wp.getUser' => 'this:wp_getUser',
            'wp.getUsers' => 'this:wp_getUsers',
            'wp.getProfile' => 'this:wp_getProfile',
            'wp.editProfile' => 'this:wp_editProfile',
            'wp.getPage' => 'this:wp_getPage',
            'wp.getPages' => 'this:wp_getPages',
            'wp.newPage' => 'this:wp_newPage',
            'wp.deletePage' => 'this:wp_deletePage',
            'wp.editPage' => 'this:wp_editPage',
            'wp.getPageList' => 'this:wp_getPageList',
            'wp.getAuthors' => 'this:wp_getAuthors',
            'wp.getCategories' => 'this:mw_getCategories',     // Alias.
            'wp.getTags' => 'this:wp_getTags',
            'wp.newCategory' => 'this:wp_newCategory',
            'wp.deleteCategory' => 'this:wp_deleteCategory',
            'wp.suggestCategories' => 'this:wp_suggestCategories',
            'wp.uploadFile' => 'this:mw_newMediaObject',    // Alias.
            'wp.deleteFile' => 'this:wp_deletePost',        // Alias.
            'wp.getCommentCount' => 'this:wp_getCommentCount',
            'wp.getPostStatusList' => 'this:wp_getPostStatusList',
            'wp.getPageStatusList' => 'this:wp_getPageStatusList',
            'wp.getPageTemplates' => 'this:wp_getPageTemplates',
            'wp.getOptions' => 'this:wp_getOptions',
            'wp.setOptions' => 'this:wp_setOptions',
            'wp.getComment' => 'this:wp_getComment',
            'wp.getComments' => 'this:wp_getComments',
            'wp.deleteComment' => 'this:wp_deleteComment',
            'wp.editComment' => 'this:wp_editComment',
            'wp.newComment' => 'this:wp_newComment',
            'wp.getCommentStatusList' => 'this:wp_getCommentStatusList',
            'wp.getMediaItem' => 'this:wp_getMediaItem',
            'wp.getMediaLibrary' => 'this:wp_getMediaLibrary',
            'wp.getPostFormats' => 'this:wp_getPostFormats',
            'wp.getPostType' => 'this:wp_getPostType',
            'wp.getPostTypes' => 'this:wp_getPostTypes',
            'wp.getRevisions' => 'this:wp_getRevisions',
            'wp.restoreRevision' => 'this:wp_restoreRevision',

            // Blogger API.
            'blogger.getUsersBlogs' => 'this:blogger_getUsersBlogs',
            'blogger.getUserInfo' => 'this:blogger_getUserInfo',
            'blogger.getPost' => 'this:blogger_getPost',
            'blogger.getRecentPosts' => 'this:blogger_getRecentPosts',
            'blogger.newPost' => 'this:blogger_newPost',
            'blogger.editPost' => 'this:blogger_editPost',
            'blogger.deletePost' => 'this:blogger_deletePost',

            // MetaWeblog API (with MT extensions to structs).
            'metaWeblog.newPost' => 'this:mw_newPost',
            'metaWeblog.editPost' => 'this:mw_editPost',
            'metaWeblog.getPost' => 'this:mw_getPost',
            'metaWeblog.getRecentPosts' => 'this:mw_getRecentPosts',
            'metaWeblog.getCategories' => 'this:mw_getCategories',
            'metaWeblog.newMediaObject' => 'this:mw_newMediaObject',

            // MetaWeblog API aliases for Blogger API.
            // See http://www.xmlrpc.com/stories/storyReader$2460
            'metaWeblog.deletePost' => 'this:blogger_deletePost',
            'metaWeblog.getUsersBlogs' => 'this:blogger_getUsersBlogs',

            // MovableType API.
            'mt.getCategoryList' => 'this:mt_getCategoryList',
            'mt.getRecentPostTitles' => 'this:mt_getRecentPostTitles',
            'mt.getPostCategories' => 'this:mt_getPostCategories',
            'mt.setPostCategories' => 'this:mt_setPostCategories',
            'mt.supportedMethods' => 'this:mt_supportedMethods',
            'mt.supportedTextFilters' => 'this:mt_supportedTextFilters',
            'mt.getTrackbackPings' => 'this:mt_getTrackbackPings',
            'mt.publishPost' => 'this:mt_publishPost',

            // Kraitnabo API
            'kraitnabo.manifest.get' => array($this, 'NbGetManifest'),
            'kraitnabo.user.get' => array($this, 'NbGetUser'),
            'kraitnabo.stat.get' => array($this, 'NbGetStat'),
            'kraitnabo.post.new' => array($this, 'NbNewPost'),
            'kraitnabo.post.edit' => array($this, 'NbEditPost'),
            'kraitnabo.post.get' => array($this, 'NbGetPost'),
            'kraitnabo.post.delete' => array($this, 'NbDeletePost'),
            'kraitnabo.posts.get' => array($this, 'NbGetPosts'),
            'kraitnabo.page.new' => array($this, 'NbNewPage'),
            'kraitnabo.page.edit' => array($this, 'NbEditPage'),
            'kraitnabo.page.get' => array($this, 'NbGetPage'),
            'kraitnabo.pages.get' => array($this, 'NbGetPages'),
            'kraitnabo.comment.new' => array($this, 'NbNewComment'),
            'kraitnabo.comment.edit' => array($this, 'NbEditComment'),
            'kraitnabo.comment.delete' => array($this, 'NbDeleteComment'),
            'kraitnabo.comments.get' => array($this, 'NbGetComments'),
            'kraitnabo.media.new' => array($this, 'NbNewMedia'),
            'kraitnabo.media.edit' => array($this, "NbEditMedia"),
            'kraitnabo.media.delete' => array($this, "NbDeleteMedia"),
            'kraitnabo.medias.get' => array($this, 'NbGetMedias'),
            'kraitnabo.medias.clear' => array($this, "NbClearMedias"),
            'kraitnabo.categories.get' => array($this, 'NbGetCategories'),
            'kraitnabo.tags.get' => array($this, 'NbGetTags'),
            'kraitnabo.options.get' => array($this, 'NbGetOptions'),

            // Pingback.
            'pingback.ping' => 'this:pingback_ping',
            'pingback.extensions.getPingbacks' => 'this:pingback_extensions_getPingbacks',

            'demo.sayHello' => 'this:sayHello',
            'demo.addTwoNumbers' => 'this:addTwoNumbers',
        );

        $this->initialise_blog_option_info();

        /**
         * Filters the methods exposed by the XML-RPC server.
         *
         * This filter can be used to add new methods, and remove built-in methods.
         *
         * @param string[] $methods An array of XML-RPC methods, keyed by their methodName.
         * @since 1.5.0
         *
         */
        $this->methods = apply_filters('xmlrpc_methods', $this->methods);
    }

    /**
     * Make private/protected methods readable for backward compatibility.
     *
     * @param string $name Method to call.
     * @param array $arguments Arguments to pass when calling.
     * @return array|IXR_Error|false Return value of the callback, false otherwise.
     * @since 4.0.0
     *
     */
    public function __call($name, $arguments)
    {
        if ('_multisite_getUsersBlogs' === $name) {
            return $this->_multisite_getUsersBlogs(...$arguments);
        }
        return false;
    }

    /**
     * Serves the XML-RPC request.
     *
     * @since 2.9.0
     */
    public function serve_request()
    {
        $this->IXR_Server($this->methods);
    }

    /**
     * Test XMLRPC API by saying, "Hello!" to client.
     *
     * @return string Hello string response.
     * @since 1.5.0
     *
     */
    public function sayHello()
    {
        return 'Hello!';
    }

    /**
     * Test XMLRPC API by adding two numbers for client.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $number1 A number to add.
     * @type int $number2 A second number to add.
     * }
     * @return int Sum of the two given numbers.
     * @since 1.5.0
     *
     */
    public function addTwoNumbers($args)
    {
        $number1 = $args[0];
        $number2 = $args[1];
        return $number1 + $number2;
    }

    /**
     * Log user in.
     *
     * @param string $username User's username.
     * @param string $password User's password.
     * @return WP_User|bool WP_User object if authentication passed, false otherwise
     * @since 2.8.0
     *
     */
    public function login($username, $password)
    {
        /*
		 * Respect old get_option() filters left for back-compat when the 'enable_xmlrpc'
		 * option was deprecated in 3.5.0. Use the 'xmlrpc_enabled' hook instead.
		 */
        $enabled = apply_filters('pre_option_enable_xmlrpc', false);
        if (false === $enabled) {
            $enabled = apply_filters('option_enable_xmlrpc', true);
        }

        /**
         * Filters whether XML-RPC methods requiring authentication are enabled.
         *
         * Contrary to the way it's named, this filter does not control whether XML-RPC is *fully*
         * enabled, rather, it only controls whether XML-RPC methods requiring authentication - such
         * as for publishing purposes - are enabled.
         *
         * Further, the filter does not control whether pingbacks or other custom endpoints that don't
         * require authentication are enabled. This behavior is expected, and due to how parity was matched
         * with the `enable_xmlrpc` UI option the filter replaced when it was introduced in 3.5.
         *
         * To disable XML-RPC methods that require authentication, use:
         *
         *     add_filter( 'xmlrpc_enabled', '__return_false' );
         *
         * For more granular control over all XML-RPC methods and requests, see the {@see 'xmlrpc_methods'}
         * and {@see 'xmlrpc_element_limit'} hooks.
         *
         * @param bool $enabled Whether XML-RPC is enabled. Default true.
         * @since 3.5.0
         *
         */
        $enabled = apply_filters('xmlrpc_enabled', $enabled);

        if (!$enabled) {
            $this->error = new IXR_Error(405, sprintf(__('XML-RPC services are disabled on this site.')));
            return false;
        }

        if ($this->auth_failed) {
            $user = new WP_Error('login_prevented');
        } else {
            $user = wp_authenticate($username, $password);
        }

        if (is_wp_error($user)) {
            $this->error = new IXR_Error(403, __('Incorrect username or password.'));

            // Flag that authentication has failed once on this wp_xmlrpc_server instance.
            $this->auth_failed = true;

            /**
             * Filters the XML-RPC user login error message.
             *
             * @param string $error The XML-RPC error message.
             * @param WP_Error $user WP_Error object.
             * @since 3.5.0
             *
             */
            $this->error = apply_filters('xmlrpc_login_error', $this->error, $user);
            return false;
        }

        wp_set_current_user($user->ID);
        return $user;
    }

    /**
     * Check user's credentials. Deprecated.
     *
     * @param string $username User's username.
     * @param string $password User's password.
     * @return bool Whether authentication passed.
     * @since 1.5.0
     * @deprecated 2.8.0 Use wp_xmlrpc_server::login()
     * @see wp_xmlrpc_server::login()
     *
     */
    public function login_pass_ok($username, $password)
    {
        return (bool)$this->login($username, $password);
    }

    /**
     * Escape string or array of strings for database.
     *
     * @param string|array $data Escape single string or array of strings.
     * @return string|void Returns with string is passed, alters by-reference
     *                     when array is passed.
     * @since 1.5.2
     *
     */
    public function escape(&$data)
    {
        if (!is_array($data)) {
            return wp_slash($data);
        }

        foreach ($data as &$v) {
            if (is_array($v)) {
                $this->escape($v);
            } elseif (!is_object($v)) {
                $v = wp_slash($v);
            }
        }
    }

    /**
     * Retrieve custom fields for post.
     *
     * @param int $post_id Post ID.
     * @return array Custom fields, if exist.
     * @since 2.5.0
     *
     */
    public function get_custom_fields($post_id)
    {
        $post_id = (int)$post_id;

        $custom_fields = array();

        foreach ((array)has_meta($post_id) as $meta) {
            // Don't expose protected fields.
            if (!current_user_can('edit_post_meta', $post_id, $meta['meta_key'])) {
                continue;
            }

            $custom_fields[] = array(
                'id' => $meta['meta_id'],
                'key' => $meta['meta_key'],
                'value' => $meta['meta_value'],
            );
        }

        return $custom_fields;
    }

    /**
     * Set custom fields for post.
     *
     * @param int $post_id Post ID.
     * @param array $fields Custom fields.
     * @since 2.5.0
     *
     */
    public function set_custom_fields($post_id, $fields)
    {
        $post_id = (int)$post_id;

        foreach ((array)$fields as $meta) {
            if (isset($meta['id'])) {
                $meta['id'] = (int)$meta['id'];
                $pmeta = get_metadata_by_mid('post', $meta['id']);

                if (!$pmeta || $pmeta->post_id != $post_id) {
                    continue;
                }

                if (isset($meta['key'])) {
                    $meta['key'] = wp_unslash($meta['key']);
                    if ($meta['key'] !== $pmeta->meta_key) {
                        continue;
                    }
                    $meta['value'] = wp_unslash($meta['value']);
                    if (current_user_can('edit_post_meta', $post_id, $meta['key'])) {
                        update_metadata_by_mid('post', $meta['id'], $meta['value']);
                    }
                } elseif (current_user_can('delete_post_meta', $post_id, $pmeta->meta_key)) {
                    delete_metadata_by_mid('post', $meta['id']);
                }
            } elseif (current_user_can('add_post_meta', $post_id, wp_unslash($meta['key']))) {
                add_post_meta($post_id, $meta['key'], $meta['value']);
            }
        }
    }

    /**
     * Retrieve custom fields for a term.
     *
     * @param int $term_id Term ID.
     * @return array Array of custom fields, if they exist.
     * @since 4.9.0
     *
     */
    public function get_term_custom_fields($term_id)
    {
        $term_id = (int)$term_id;

        $custom_fields = array();

        foreach ((array)has_term_meta($term_id) as $meta) {

            if (!current_user_can('edit_term_meta', $term_id)) {
                continue;
            }

            $custom_fields[] = array(
                'id' => $meta['meta_id'],
                'key' => $meta['meta_key'],
                'value' => $meta['meta_value'],
            );
        }

        return $custom_fields;
    }

    /**
     * Set custom fields for a term.
     *
     * @param int $term_id Term ID.
     * @param array $fields Custom fields.
     * @since 4.9.0
     *
     */
    public function set_term_custom_fields($term_id, $fields)
    {
        $term_id = (int)$term_id;

        foreach ((array)$fields as $meta) {
            if (isset($meta['id'])) {
                $meta['id'] = (int)$meta['id'];
                $pmeta = get_metadata_by_mid('term', $meta['id']);
                if (isset($meta['key'])) {
                    $meta['key'] = wp_unslash($meta['key']);
                    if ($meta['key'] !== $pmeta->meta_key) {
                        continue;
                    }
                    $meta['value'] = wp_unslash($meta['value']);
                    if (current_user_can('edit_term_meta', $term_id)) {
                        update_metadata_by_mid('term', $meta['id'], $meta['value']);
                    }
                } elseif (current_user_can('delete_term_meta', $term_id)) {
                    delete_metadata_by_mid('term', $meta['id']);
                }
            } elseif (current_user_can('add_term_meta', $term_id)) {
                add_term_meta($term_id, $meta['key'], $meta['value']);
            }
        }
    }

    /**
     * Set up blog options property.
     *
     * Passes property through {@see 'xmlrpc_blog_options'} filter.
     *
     * @since 2.6.0
     */
    public function initialise_blog_option_info()
    {
        $this->blog_options = array(
            // Read-only options.
            'software_name' => array(
                'desc' => __('Software Name'),
                'readonly' => true,
                'value' => 'WordPress',
            ),
            'software_version' => array(
                'desc' => __('Software Version'),
                'readonly' => true,
                'value' => get_bloginfo('version'),
            ),
            'blog_url' => array(
                'desc' => __('WordPress Address (URL)'),
                'readonly' => true,
                'option' => 'siteurl',
            ),
            'home_url' => array(
                'desc' => __('Site Address (URL)'),
                'readonly' => true,
                'option' => 'home',
            ),
            'login_url' => array(
                'desc' => __('Login Address (URL)'),
                'readonly' => true,
                'value' => wp_login_url(),
            ),
            'admin_url' => array(
                'desc' => __('The URL to the admin area'),
                'readonly' => true,
                'value' => get_admin_url(),
            ),
            'image_default_link_type' => array(
                'desc' => __('Image default link type'),
                'readonly' => true,
                'option' => 'image_default_link_type',
            ),
            'image_default_size' => array(
                'desc' => __('Image default size'),
                'readonly' => true,
                'option' => 'image_default_size',
            ),
            'image_default_align' => array(
                'desc' => __('Image default align'),
                'readonly' => true,
                'option' => 'image_default_align',
            ),
            'template' => array(
                'desc' => __('Template'),
                'readonly' => true,
                'option' => 'template',
            ),
            'stylesheet' => array(
                'desc' => __('Stylesheet'),
                'readonly' => true,
                'option' => 'stylesheet',
            ),
            'post_thumbnail' => array(
                'desc' => __('Post Thumbnail'),
                'readonly' => true,
                'value' => current_theme_supports('post-thumbnails'),
            ),

            // Updatable options.
            'time_zone' => array(
                'desc' => __('Time Zone'),
                'readonly' => false,
                'option' => 'gmt_offset',
            ),
            'blog_title' => array(
                'desc' => __('Site Title'),
                'readonly' => false,
                'option' => 'blogname',
            ),
            'blog_tagline' => array(
                'desc' => __('Site Tagline'),
                'readonly' => false,
                'option' => 'blogdescription',
            ),
            'date_format' => array(
                'desc' => __('Date Format'),
                'readonly' => false,
                'option' => 'date_format',
            ),
            'time_format' => array(
                'desc' => __('Time Format'),
                'readonly' => false,
                'option' => 'time_format',
            ),
            'users_can_register' => array(
                'desc' => __('Allow new users to sign up'),
                'readonly' => false,
                'option' => 'users_can_register',
            ),
            'thumbnail_size_w' => array(
                'desc' => __('Thumbnail Width'),
                'readonly' => false,
                'option' => 'thumbnail_size_w',
            ),
            'thumbnail_size_h' => array(
                'desc' => __('Thumbnail Height'),
                'readonly' => false,
                'option' => 'thumbnail_size_h',
            ),
            'thumbnail_crop' => array(
                'desc' => __('Crop thumbnail to exact dimensions'),
                'readonly' => false,
                'option' => 'thumbnail_crop',
            ),
            'medium_size_w' => array(
                'desc' => __('Medium size image width'),
                'readonly' => false,
                'option' => 'medium_size_w',
            ),
            'medium_size_h' => array(
                'desc' => __('Medium size image height'),
                'readonly' => false,
                'option' => 'medium_size_h',
            ),
            'medium_large_size_w' => array(
                'desc' => __('Medium-Large size image width'),
                'readonly' => false,
                'option' => 'medium_large_size_w',
            ),
            'medium_large_size_h' => array(
                'desc' => __('Medium-Large size image height'),
                'readonly' => false,
                'option' => 'medium_large_size_h',
            ),
            'large_size_w' => array(
                'desc' => __('Large size image width'),
                'readonly' => false,
                'option' => 'large_size_w',
            ),
            'large_size_h' => array(
                'desc' => __('Large size image height'),
                'readonly' => false,
                'option' => 'large_size_h',
            ),
            'default_comment_status' => array(
                'desc' => __('Allow people to submit comments on new posts.'),
                'readonly' => false,
                'option' => 'default_comment_status',
            ),
            'default_ping_status' => array(
                'desc' => __('Allow link notifications from other blogs (pingbacks and trackbacks) on new posts.'),
                'readonly' => false,
                'option' => 'default_ping_status',
            ),
        );

        /**
         * Filters the XML-RPC blog options property.
         *
         * @param array $blog_options An array of XML-RPC blog options.
         * @since 2.6.0
         *
         */
        $this->blog_options = apply_filters('xmlrpc_blog_options', $this->blog_options);
    }

    /**
     * Retrieve the blogs of the user.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type string $username Username.
     * @type string $password Password.
     * }
     * @return array|IXR_Error Array contains:
     *  - 'isAdmin'
     *  - 'isPrimary' - whether the blog is the user's primary blog
     *  - 'url'
     *  - 'blogid'
     *  - 'blogName'
     *  - 'xmlrpc' - url of xmlrpc endpoint
     * @since 2.6.0
     *
     */
    public function wp_getUsersBlogs($args)
    {
        if (!$this->minimum_args($args, 2)) {
            return $this->error;
        }

        // If this isn't on WPMU then just use blogger_getUsersBlogs().
        if (!is_multisite()) {
            array_unshift($args, 1);
            return $this->blogger_getUsersBlogs($args);
        }

        $this->escape($args);

        $username = $args[0];
        $password = $args[1];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        /**
         * Fires after the XML-RPC user has been authenticated but before the rest of
         * the method logic begins.
         *
         * All built-in XML-RPC methods use the action xmlrpc_call, with a parameter
         * equal to the method's name, e.g., wp.getUsersBlogs, wp.newPost, etc.
         *
         * @param string $name The method name.
         * @since 2.5.0
         *
         */
        do_action('xmlrpc_call', 'wp.getUsersBlogs');

        $blogs = (array)get_blogs_of_user($user->ID);
        $struct = array();
        $primary_blog_id = 0;
        $active_blog = get_active_blog_for_user($user->ID);
        if ($active_blog) {
            $primary_blog_id = (int)$active_blog->blog_id;
        }

        foreach ($blogs as $blog) {
            // Don't include blogs that aren't hosted at this site.
            if (get_current_network_id() != $blog->site_id) {
                continue;
            }

            $blog_id = $blog->userblog_id;

            switch_to_blog($blog_id);

            $is_admin = current_user_can('manage_options');
            $is_primary = ((int)$blog_id === $primary_blog_id);

            $struct[] = array(
                'isAdmin' => $is_admin,
                'isPrimary' => $is_primary,
                'url' => home_url('/'),
                'blogid' => (string)$blog_id,
                'blogName' => get_option('blogname'),
                'xmlrpc' => site_url('xmlrpc.php', 'rpc'),
            );

            restore_current_blog();
        }

        return $struct;
    }

    /**
     * Checks if the method received at least the minimum number of arguments.
     *
     * @param array $args An array of arguments to check.
     * @param int $count Minimum number of arguments.
     * @return bool True if `$args` contains at least `$count` arguments, false otherwise.
     * @since 3.4.0
     *
     */
    protected function minimum_args($args, $count)
    {
        if (!is_array($args) || count($args) < $count) {
            $this->error = new IXR_Error(400, __('Insufficient arguments passed to this XML-RPC method.'));
            return false;
        }

        return true;
    }

    /**
     * Prepares taxonomy data for return in an XML-RPC object.
     *
     * @param object $taxonomy The unprepared taxonomy data.
     * @param array $fields The subset of taxonomy fields to return.
     * @return array The prepared taxonomy data.
     */
    protected function _prepare_taxonomy($taxonomy, $fields)
    {
        $_taxonomy = array(
            'name' => $taxonomy->name,
            'label' => $taxonomy->label,
            'hierarchical' => (bool)$taxonomy->hierarchical,
            'public' => (bool)$taxonomy->public,
            'show_ui' => (bool)$taxonomy->show_ui,
            '_builtin' => (bool)$taxonomy->_builtin,
        );

        if (in_array('labels', $fields)) {
            $_taxonomy['labels'] = (array)$taxonomy->labels;
        }

        if (in_array('cap', $fields)) {
            $_taxonomy['cap'] = (array)$taxonomy->cap;
        }

        if (in_array('menu', $fields)) {
            $_taxonomy['show_in_menu'] = (bool)$_taxonomy->show_in_menu;
        }

        if (in_array('object_type', $fields)) {
            $_taxonomy['object_type'] = array_unique((array)$taxonomy->object_type);
        }

        /**
         * Filters XML-RPC-prepared data for the given taxonomy.
         *
         * @param array $_taxonomy An array of taxonomy data.
         * @param WP_Taxonomy $taxonomy Taxonomy object.
         * @param array $fields The subset of taxonomy fields to return.
         * @since 3.4.0
         *
         */
        return apply_filters('xmlrpc_prepare_taxonomy', $_taxonomy, $taxonomy, $fields);
    }

    /**
     * Prepares term data for return in an XML-RPC object.
     *
     * @param array|object $term The unprepared term data.
     * @return array The prepared term data.
     */
    protected function _prepare_term($term)
    {
        $_term = $term;
        if (!is_array($_term)) {
            $_term = get_object_vars($_term);
        }

        // For integers which may be larger than XML-RPC supports ensure we return strings.
        $_term['term_id'] = strval($_term['term_id']);
        $_term['term_group'] = strval($_term['term_group']);
        $_term['term_taxonomy_id'] = strval($_term['term_taxonomy_id']);
        $_term['parent'] = strval($_term['parent']);

        // Count we are happy to return as an integer because people really shouldn't use terms that much.
        $_term['count'] = intval($_term['count']);

        // Get term meta.
        $_term['custom_fields'] = $this->get_term_custom_fields($_term['term_id']);

        /**
         * Filters XML-RPC-prepared data for the given term.
         *
         * @param array $_term An array of term data.
         * @param array|object $term Term object or array.
         * @since 3.4.0
         *
         */
        return apply_filters('xmlrpc_prepare_term', $_term, $term);
    }

    /**
     * Convert a WordPress date string to an IXR_Date object.
     *
     * @param string $date Date string to convert.
     * @return IXR_Date IXR_Date object.
     */
    protected function _convert_date($date)
    {
        if ('0000-00-00 00:00:00' === $date) {
            return new IXR_Date('00000000T00:00:00Z');
        }
        return new IXR_Date(mysql2date('Ymd\TH:i:s', $date, false));
    }

    /**
     * Convert a WordPress GMT date string to an IXR_Date object.
     *
     * @param string $date_gmt WordPress GMT date string.
     * @param string $date Date string.
     * @return IXR_Date IXR_Date object.
     */
    protected function _convert_date_gmt($date_gmt, $date)
    {
        if ('0000-00-00 00:00:00' !== $date && '0000-00-00 00:00:00' === $date_gmt) {
            return new IXR_Date(get_gmt_from_date(mysql2date('Y-m-d H:i:s', $date, false), 'Ymd\TH:i:s'));
        }
        return $this->_convert_date($date_gmt);
    }

    /**
     * Prepares post data for return in an XML-RPC object.
     *
     * @param array $post The unprepared post data.
     * @param array $fields The subset of post type fields to return.
     * @return array The prepared post data.
     */
    protected function _prepare_post($post, $fields)
    {
        // Holds the data for this post. built up based on $fields.
        $_post = array('post_id' => strval($post['ID']));

        // Prepare common post fields.
        $post_fields = array(
            'post_title' => $post['post_title'],
            'post_date' => $this->_convert_date($post['post_date']),
            'post_date_gmt' => $this->_convert_date_gmt($post['post_date_gmt'], $post['post_date']),
            'post_modified' => $this->_convert_date($post['post_modified']),
            'post_modified_gmt' => $this->_convert_date_gmt($post['post_modified_gmt'], $post['post_modified']),
            'post_status' => $post['post_status'],
            'post_type' => $post['post_type'],
            'post_name' => $post['post_name'],
            'post_author' => $post['post_author'],
            'post_password' => $post['post_password'],
            'post_excerpt' => $post['post_excerpt'],
            'post_content' => $post['post_content'],
            'post_parent' => strval($post['post_parent']),
            'post_mime_type' => $post['post_mime_type'],
            'link' => get_permalink($post['ID']),
            'guid' => $post['guid'],
            'menu_order' => intval($post['menu_order']),
            'comment_status' => $post['comment_status'],
            'ping_status' => $post['ping_status'],
            'sticky' => ('post' === $post['post_type'] && is_sticky($post['ID'])),
        );

        // Thumbnail.
        $post_fields['post_thumbnail'] = array();
        $thumbnail_id = get_post_thumbnail_id($post['ID']);
        if ($thumbnail_id) {
            $thumbnail_size = current_theme_supports('post-thumbnail') ? 'post-thumbnail' : 'thumbnail';
            $post_fields['post_thumbnail'] = $this->_prepare_media_item(get_post($thumbnail_id), $thumbnail_size);
        }

        // Consider future posts as published.
        if ('future' === $post_fields['post_status']) {
            $post_fields['post_status'] = 'publish';
        }

        // Fill in blank post format.
        $post_fields['post_format'] = get_post_format($post['ID']);
        if (empty($post_fields['post_format'])) {
            $post_fields['post_format'] = 'standard';
        }

        // Merge requested $post_fields fields into $_post.
        if (in_array('post', $fields)) {
            $_post = array_merge($_post, $post_fields);
        } else {
            $requested_fields = array_intersect_key($post_fields, array_flip($fields));
            $_post = array_merge($_post, $requested_fields);
        }

        $all_taxonomy_fields = in_array('taxonomies', $fields);

        if ($all_taxonomy_fields || in_array('terms', $fields)) {
            $post_type_taxonomies = get_object_taxonomies($post['post_type'], 'names');
            $terms = wp_get_object_terms($post['ID'], $post_type_taxonomies);
            $_post['terms'] = array();
            foreach ($terms as $term) {
                $_post['terms'][] = $this->_prepare_term($term);
            }
        }

        if (in_array('custom_fields', $fields)) {
            $_post['custom_fields'] = $this->get_custom_fields($post['ID']);
        }

        if (in_array('enclosure', $fields)) {
            $_post['enclosure'] = array();
            $enclosures = (array)get_post_meta($post['ID'], 'enclosure');
            if (!empty($enclosures)) {
                $encdata = explode("\n", $enclosures[0]);
                $_post['enclosure']['url'] = trim(htmlspecialchars($encdata[0]));
                $_post['enclosure']['length'] = (int)trim($encdata[1]);
                $_post['enclosure']['type'] = trim($encdata[2]);
            }
        }

        /**
         * Filters XML-RPC-prepared date for the given post.
         *
         * @param array $_post An array of modified post data.
         * @param array $post An array of post data.
         * @param array $fields An array of post fields.
         * @since 3.4.0
         *
         */
        return apply_filters('xmlrpc_prepare_post', $_post, $post, $fields);
    }

    /**
     * Prepares post data for return in an XML-RPC object.
     *
     * @param WP_Post_Type $post_type Post type object.
     * @param array $fields The subset of post fields to return.
     * @return array The prepared post type data.
     * @since 4.6.0 Converted the `$post_type` parameter to accept a WP_Post_Type object.
     *
     * @since 3.4.0
     */
    protected function _prepare_post_type($post_type, $fields)
    {
        $_post_type = array(
            'name' => $post_type->name,
            'label' => $post_type->label,
            'hierarchical' => (bool)$post_type->hierarchical,
            'public' => (bool)$post_type->public,
            'show_ui' => (bool)$post_type->show_ui,
            '_builtin' => (bool)$post_type->_builtin,
            'has_archive' => (bool)$post_type->has_archive,
            'supports' => get_all_post_type_supports($post_type->name),
        );

        if (in_array('labels', $fields)) {
            $_post_type['labels'] = (array)$post_type->labels;
        }

        if (in_array('cap', $fields)) {
            $_post_type['cap'] = (array)$post_type->cap;
            $_post_type['map_meta_cap'] = (bool)$post_type->map_meta_cap;
        }

        if (in_array('menu', $fields)) {
            $_post_type['menu_position'] = (int)$post_type->menu_position;
            $_post_type['menu_icon'] = $post_type->menu_icon;
            $_post_type['show_in_menu'] = (bool)$post_type->show_in_menu;
        }

        if (in_array('taxonomies', $fields)) {
            $_post_type['taxonomies'] = get_object_taxonomies($post_type->name, 'names');
        }

        /**
         * Filters XML-RPC-prepared date for the given post type.
         *
         * @param array $_post_type An array of post type data.
         * @param WP_Post_Type $post_type Post type object.
         * @since 3.4.0
         * @since 4.6.0 Converted the `$post_type` parameter to accept a WP_Post_Type object.
         *
         */
        return apply_filters('xmlrpc_prepare_post_type', $_post_type, $post_type);
    }

    /**
     * Prepares media item data for return in an XML-RPC object.
     *
     * @param object $media_item The unprepared media item data.
     * @param string $thumbnail_size The image size to use for the thumbnail URL.
     * @return array The prepared media item data.
     */
    protected function _prepare_media_item($media_item, $thumbnail_size = 'thumbnail')
    {
        $_media_item = array(
            'attachment_id' => strval($media_item->ID),
            'date_created_gmt' => $this->_convert_date_gmt($media_item->post_date_gmt, $media_item->post_date),
            'parent' => $media_item->post_parent,
            'link' => wp_get_attachment_url($media_item->ID),
            'title' => $media_item->post_title,
            'caption' => $media_item->post_excerpt,
            'description' => $media_item->post_content,
            'metadata' => wp_get_attachment_metadata($media_item->ID),
            'type' => $media_item->post_mime_type,
        );

        $thumbnail_src = image_downsize($media_item->ID, $thumbnail_size);
        if ($thumbnail_src) {
            $_media_item['thumbnail'] = $thumbnail_src[0];
        } else {
            $_media_item['thumbnail'] = $_media_item['link'];
        }

        /**
         * Filters XML-RPC-prepared data for the given media item.
         *
         * @param array $_media_item An array of media item data.
         * @param object $media_item Media item object.
         * @param string $thumbnail_size Image size.
         * @since 3.4.0
         *
         */
        return apply_filters('xmlrpc_prepare_media_item', $_media_item, $media_item, $thumbnail_size);
    }

    /**
     * Prepares page data for return in an XML-RPC object.
     *
     * @param object $page The unprepared page data.
     * @return array The prepared page data.
     */
    protected function _prepare_page($page)
    {
        // Get all of the page content and link.
        $full_page = get_extended($page->post_content);
        $link = get_permalink($page->ID);

        // Get info the page parent if there is one.
        $parent_title = '';
        if (!empty($page->post_parent)) {
            $parent = get_post($page->post_parent);
            $parent_title = $parent->post_title;
        }

        // Determine comment and ping settings.
        $allow_comments = comments_open($page->ID) ? 1 : 0;
        $allow_pings = pings_open($page->ID) ? 1 : 0;

        // Format page date.
        $page_date = $this->_convert_date($page->post_date);
        $page_date_gmt = $this->_convert_date_gmt($page->post_date_gmt, $page->post_date);

        // Pull the categories info together.
        $categories = array();
        if (is_object_in_taxonomy('page', 'category')) {
            foreach (wp_get_post_categories($page->ID) as $cat_id) {
                $categories[] = get_cat_name($cat_id);
            }
        }

        // Get the author info.
        $author = get_userdata($page->post_author);

        $page_template = get_page_template_slug($page->ID);
        if (empty($page_template)) {
            $page_template = 'default';
        }

        $_page = array(
            'dateCreated' => $page_date,
            'userid' => $page->post_author,
            'page_id' => $page->ID,
            'page_status' => $page->post_status,
            'description' => $full_page['main'],
            'title' => $page->post_title,
            'link' => $link,
            'permaLink' => $link,
            'categories' => $categories,
            'excerpt' => $page->post_excerpt,
            'text_more' => $full_page['extended'],
            'mt_allow_comments' => $allow_comments,
            'mt_allow_pings' => $allow_pings,
            'wp_slug' => $page->post_name,
            'wp_password' => $page->post_password,
            'wp_author' => $author->display_name,
            'wp_page_parent_id' => $page->post_parent,
            'wp_page_parent_title' => $parent_title,
            'wp_page_order' => $page->menu_order,
            'wp_author_id' => (string)$author->ID,
            'wp_author_display_name' => $author->display_name,
            'date_created_gmt' => $page_date_gmt,
            'custom_fields' => $this->get_custom_fields($page->ID),
            'wp_page_template' => $page_template,
        );

        /**
         * Filters XML-RPC-prepared data for the given page.
         *
         * @param array $_page An array of page data.
         * @param WP_Post $page Page object.
         * @since 3.4.0
         *
         */
        return apply_filters('xmlrpc_prepare_page', $_page, $page);
    }

    /**
     * Prepares comment data for return in an XML-RPC object.
     *
     * @param object $comment The unprepared comment data.
     * @return array The prepared comment data.
     */
    protected function _prepare_comment($comment)
    {
        // Format page date.
        $comment_date_gmt = $this->_convert_date_gmt($comment->comment_date_gmt, $comment->comment_date);

        if ('0' == $comment->comment_approved) {
            $comment_status = 'hold';
        } elseif ('spam' == $comment->comment_approved) {
            $comment_status = 'spam';
        } elseif ('1' == $comment->comment_approved) {
            $comment_status = 'approve';
        } else {
            $comment_status = $comment->comment_approved;
        }
        $_comment = array(
            'date_created_gmt' => $comment_date_gmt,
            'user_id' => $comment->user_id,
            'comment_id' => $comment->comment_ID,
            'parent' => $comment->comment_parent,
            'status' => $comment_status,
            'content' => $comment->comment_content,
            'link' => get_comment_link($comment),
            'post_id' => $comment->comment_post_ID,
            'post_title' => get_the_title($comment->comment_post_ID),
            'author' => $comment->comment_author,
            'author_url' => $comment->comment_author_url,
            'author_email' => $comment->comment_author_email,
            'author_ip' => $comment->comment_author_IP,
            'type' => $comment->comment_type,
        );

        /**
         * Filters XML-RPC-prepared data for the given comment.
         *
         * @param array $_comment An array of prepared comment data.
         * @param WP_Comment $comment Comment object.
         * @since 3.4.0
         *
         */
        return apply_filters('xmlrpc_prepare_comment', $_comment, $comment);
    }

    /**
     * Prepares user data for return in an XML-RPC object.
     *
     * @param WP_User $user The unprepared user object.
     * @param array $fields The subset of user fields to return.
     * @return array The prepared user data.
     */
    protected function _prepare_user($user, $fields)
    {
        $_user = array('user_id' => strval($user->ID));

        $user_fields = array(
            'username' => $user->user_login,
            'first_name' => $user->user_firstname,
            'last_name' => $user->user_lastname,
            'registered' => $this->_convert_date($user->user_registered),
            'bio' => $user->user_description,
            'email' => $user->user_email,
            'nickname' => $user->nickname,
            'nicename' => $user->user_nicename,
            'url' => $user->user_url,
            'display_name' => $user->display_name,
            'roles' => $user->roles,
        );

        if (in_array('all', $fields)) {
            $_user = array_merge($_user, $user_fields);
        } else {
            if (in_array('basic', $fields)) {
                $basic_fields = array('username', 'email', 'registered', 'display_name', 'nicename');
                $fields = array_merge($fields, $basic_fields);
            }
            $requested_fields = array_intersect_key($user_fields, array_flip($fields));
            $_user = array_merge($_user, $requested_fields);
        }

        /**
         * Filters XML-RPC-prepared data for the given user.
         *
         * @param array $_user An array of user data.
         * @param WP_User $user User object.
         * @param array $fields An array of user fields.
         * @since 3.5.0
         *
         */
        return apply_filters('xmlrpc_prepare_user', $_user, $user, $fields);
    }

    /**
     * Create a new post for any registered post type.
     *
     * @param array $args {
     *     Method arguments. Note: top-level arguments must be ordered as documented.
     *
     * @type int $blog_id Blog ID (unused).
     * @type string $username Username.
     * @type string $password Password.
     * @type array $content_struct {
     *         Content struct for adding a new post. See wp_insert_post() for information on
     *         additional post fields
     *
     * @type string $post_type Post type. Default 'post'.
     * @type string $post_status Post status. Default 'draft'
     * @type string $post_title Post title.
     * @type int $post_author Post author ID.
     * @type string $post_excerpt Post excerpt.
     * @type string $post_content Post content.
     * @type string $post_date_gmt Post date in GMT.
     * @type string $post_date Post date.
     * @type string $post_password Post password (20-character limit).
     * @type string $comment_status Post comment enabled status. Accepts 'open' or 'closed'.
     * @type string $ping_status Post ping status. Accepts 'open' or 'closed'.
     * @type bool $sticky Whether the post should be sticky. Automatically false if
     *                                      `$post_status` is 'private'.
     * @type int $post_thumbnail ID of an image to use as the post thumbnail/featured image.
     * @type array $custom_fields Array of meta key/value pairs to add to the post.
     * @type array $terms Associative array with taxonomy names as keys and arrays
     *                                      of term IDs as values.
     * @type array $terms_names Associative array with taxonomy names as keys and arrays
     *                                      of term names as values.
     * @type array $enclosure {
     *             Array of feed enclosure data to add to post meta.
     *
     * @type string $url URL for the feed enclosure.
     * @type int $length Size in bytes of the enclosure.
     * @type string $type Mime-type for the enclosure.
     *         }
     *     }
     * }
     * @return int|IXR_Error Post ID on success, IXR_Error instance otherwise.
     * @since 3.4.0
     *
     * @link https://en.wikipedia.org/wiki/RSS_enclosure for information on RSS enclosures.
     *
     */
    public function wp_newPost($args)
    {
        if (!$this->minimum_args($args, 4)) {
            return $this->error;
        }

        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        $content_struct = $args[3];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        // Convert the date field back to IXR form.
        if (isset($content_struct['post_date']) && !($content_struct['post_date'] instanceof IXR_Date)) {
            $content_struct['post_date'] = $this->_convert_date($content_struct['post_date']);
        }

        /*
		 * Ignore the existing GMT date if it is empty or a non-GMT date was supplied in $content_struct,
		 * since _insert_post() will ignore the non-GMT date if the GMT date is set.
		 */
        if (isset($content_struct['post_date_gmt']) && !($content_struct['post_date_gmt'] instanceof IXR_Date)) {
            if ('0000-00-00 00:00:00' === $content_struct['post_date_gmt'] || isset($content_struct['post_date'])) {
                unset($content_struct['post_date_gmt']);
            } else {
                $content_struct['post_date_gmt'] = $this->_convert_date($content_struct['post_date_gmt']);
            }
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.newPost');

        unset($content_struct['ID']);

        return $this->_insert_post($user, $content_struct);
    }

    /**
     * Helper method for filtering out elements from an array.
     *
     * @param int $count Number to compare to one.
     * @since 3.4.0
     *
     */
    private function _is_greater_than_one($count)
    {
        return $count > 1;
    }

    /**
     * Encapsulate the logic for sticking a post
     * and determining if the user has permission to do so
     *
     * @param array $post_data
     * @param bool $update
     * @return void|IXR_Error
     * @since 4.3.0
     *
     */
    private function _toggle_sticky($post_data, $update = false)
    {
        $post_type = get_post_type_object($post_data['post_type']);

        // Private and password-protected posts cannot be stickied.
        if ('private' === $post_data['post_status'] || !empty($post_data['post_password'])) {
            // Error if the client tried to stick the post, otherwise, silently unstick.
            if (!empty($post_data['sticky'])) {
                return new IXR_Error(401, __('Sorry, you cannot stick a private post.'));
            }

            if ($update) {
                unstick_post($post_data['ID']);
            }
        } elseif (isset($post_data['sticky'])) {
            if (!current_user_can($post_type->cap->edit_others_posts)) {
                return new IXR_Error(401, __('Sorry, you are not allowed to make posts sticky.'));
            }

            $sticky = wp_validate_boolean($post_data['sticky']);
            if ($sticky) {
                stick_post($post_data['ID']);
            } else {
                unstick_post($post_data['ID']);
            }
        }
    }

    /**
     * Helper method for wp_newPost() and wp_editPost(), containing shared logic.
     *
     * @param WP_User $user The post author if post_author isn't set in $content_struct.
     * @param array|IXR_Error $content_struct Post data to insert.
     * @return IXR_Error|string
     * @see wp_insert_post()
     *
     * @since 3.4.0
     *
     */
    protected function _insert_post($user, $content_struct)
    {
        $defaults = array(
            'post_status' => 'draft',
            'post_type' => 'post',
            'post_author' => null,
            'post_password' => null,
            'post_excerpt' => null,
            'post_content' => null,
            'post_title' => null,
            'post_date' => null,
            'post_date_gmt' => null,
            'post_format' => null,
            'post_name' => null,
            'post_thumbnail' => null,
            'post_parent' => null,
            'ping_status' => null,
            'comment_status' => null,
            'custom_fields' => null,
            'terms_names' => null,
            'terms' => null,
            'sticky' => null,
            'enclosure' => null,
            'ID' => null,
        );

        $post_data = wp_parse_args(array_intersect_key($content_struct, $defaults), $defaults);

        $post_type = get_post_type_object($post_data['post_type']);
        if (!$post_type) {
            return new IXR_Error(403, __('Invalid post type.'));
        }

        $update = !empty($post_data['ID']);

        if ($update) {
            if (!get_post($post_data['ID'])) {
                return new IXR_Error(401, __('Invalid post ID.'));
            }
            if (!current_user_can('edit_post', $post_data['ID'])) {
                return new IXR_Error(401, __('Sorry, you are not allowed to edit this post.'));
            }
            if (get_post_type($post_data['ID']) !== $post_data['post_type']) {
                return new IXR_Error(401, __('The post type may not be changed.'));
            }
        } else {
            if (!current_user_can($post_type->cap->create_posts) || !current_user_can($post_type->cap->edit_posts)) {
                return new IXR_Error(401, __('Sorry, you are not allowed to post on this site.'));
            }
        }

        switch ($post_data['post_status']) {
            case 'draft':
            case 'pending':
                break;
            case 'private':
                if (!current_user_can($post_type->cap->publish_posts)) {
                    return new IXR_Error(401, __('Sorry, you are not allowed to create private posts in this post type.'));
                }
                break;
            case 'publish':
            case 'future':
                if (!current_user_can($post_type->cap->publish_posts)) {
                    return new IXR_Error(401, __('Sorry, you are not allowed to publish posts in this post type.'));
                }
                break;
            default:
                if (!get_post_status_object($post_data['post_status'])) {
                    $post_data['post_status'] = 'draft';
                }
                break;
        }

        if (!empty($post_data['post_password']) && !current_user_can($post_type->cap->publish_posts)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to create password protected posts in this post type.'));
        }

        $post_data['post_author'] = absint($post_data['post_author']);
        if (!empty($post_data['post_author']) && $post_data['post_author'] != $user->ID) {
            if (!current_user_can($post_type->cap->edit_others_posts)) {
                return new IXR_Error(401, __('Sorry, you are not allowed to create posts as this user.'));
            }

            $author = get_userdata($post_data['post_author']);

            if (!$author) {
                return new IXR_Error(404, __('Invalid author ID.'));
            }
        } else {
            $post_data['post_author'] = $user->ID;
        }

        if (isset($post_data['comment_status']) && 'open' !== $post_data['comment_status'] && 'closed' !== $post_data['comment_status']) {
            unset($post_data['comment_status']);
        }

        if (isset($post_data['ping_status']) && 'open' !== $post_data['ping_status'] && 'closed' !== $post_data['ping_status']) {
            unset($post_data['ping_status']);
        }

        // Do some timestamp voodoo.
        if (!empty($post_data['post_date_gmt'])) {
            // We know this is supposed to be GMT, so we're going to slap that Z on there by force.
            $dateCreated = rtrim($post_data['post_date_gmt']->getIso(), 'Z') . 'Z';
        } elseif (!empty($post_data['post_date'])) {
            $dateCreated = $post_data['post_date']->getIso();
        }

        // Default to not flagging the post date to be edited unless it's intentional.
        $post_data['edit_date'] = false;

        if (!empty($dateCreated)) {
            $post_data['post_date'] = iso8601_to_datetime($dateCreated);
            $post_data['post_date_gmt'] = iso8601_to_datetime($dateCreated, 'gmt');

            // Flag the post date to be edited.
            $post_data['edit_date'] = true;
        }

        if (!isset($post_data['ID'])) {
            $post_data['ID'] = get_default_post_to_edit($post_data['post_type'], true)->ID;
        }
        $post_ID = $post_data['ID'];

        if ('post' === $post_data['post_type']) {
            $error = $this->_toggle_sticky($post_data, $update);
            if ($error) {
                return $error;
            }
        }

        if (isset($post_data['post_thumbnail'])) {
            // Empty value deletes, non-empty value adds/updates.
            if (!$post_data['post_thumbnail']) {
                delete_post_thumbnail($post_ID);
            } elseif (!get_post(absint($post_data['post_thumbnail']))) {
                return new IXR_Error(404, __('Invalid attachment ID.'));
            }
            set_post_thumbnail($post_ID, $post_data['post_thumbnail']);
            unset($content_struct['post_thumbnail']);
        }

        if (isset($post_data['custom_fields'])) {
            $this->set_custom_fields($post_ID, $post_data['custom_fields']);
        }

        if (isset($post_data['terms']) || isset($post_data['terms_names'])) {
            $post_type_taxonomies = get_object_taxonomies($post_data['post_type'], 'objects');

            // Accumulate term IDs from terms and terms_names.
            $terms = array();

            // First validate the terms specified by ID.
            if (isset($post_data['terms']) && is_array($post_data['terms'])) {
                $taxonomies = array_keys($post_data['terms']);

                // Validating term ids.
                foreach ($taxonomies as $taxonomy) {
                    if (!array_key_exists($taxonomy, $post_type_taxonomies)) {
                        return new IXR_Error(401, __('Sorry, one of the given taxonomies is not supported by the post type.'));
                    }

                    if (!current_user_can($post_type_taxonomies[$taxonomy]->cap->assign_terms)) {
                        return new IXR_Error(401, __('Sorry, you are not allowed to assign a term to one of the given taxonomies.'));
                    }

                    $term_ids = $post_data['terms'][$taxonomy];
                    $terms[$taxonomy] = array();
                    foreach ($term_ids as $term_id) {
                        $term = get_term_by('id', $term_id, $taxonomy);

                        if (!$term) {
                            return new IXR_Error(403, __('Invalid term ID.'));
                        }

                        $terms[$taxonomy][] = (int)$term_id;
                    }
                }
            }

            // Now validate terms specified by name.
            if (isset($post_data['terms_names']) && is_array($post_data['terms_names'])) {
                $taxonomies = array_keys($post_data['terms_names']);

                foreach ($taxonomies as $taxonomy) {
                    if (!array_key_exists($taxonomy, $post_type_taxonomies)) {
                        return new IXR_Error(401, __('Sorry, one of the given taxonomies is not supported by the post type.'));
                    }

                    if (!current_user_can($post_type_taxonomies[$taxonomy]->cap->assign_terms)) {
                        return new IXR_Error(401, __('Sorry, you are not allowed to assign a term to one of the given taxonomies.'));
                    }

                    /*
					 * For hierarchical taxonomies, we can't assign a term when multiple terms
					 * in the hierarchy share the same name.
					 */
                    $ambiguous_terms = array();
                    if (is_taxonomy_hierarchical($taxonomy)) {
                        $tax_term_names = get_terms(
                            array(
                                'taxonomy' => $taxonomy,
                                'fields' => 'names',
                                'hide_empty' => false,
                            )
                        );

                        // Count the number of terms with the same name.
                        $tax_term_names_count = array_count_values($tax_term_names);

                        // Filter out non-ambiguous term names.
                        $ambiguous_tax_term_counts = array_filter($tax_term_names_count, array($this, '_is_greater_than_one'));

                        $ambiguous_terms = array_keys($ambiguous_tax_term_counts);
                    }

                    $term_names = $post_data['terms_names'][$taxonomy];
                    foreach ($term_names as $term_name) {
                        if (in_array($term_name, $ambiguous_terms)) {
                            return new IXR_Error(401, __('Ambiguous term name used in a hierarchical taxonomy. Please use term ID instead.'));
                        }

                        $term = get_term_by('name', $term_name, $taxonomy);

                        if (!$term) {
                            // Term doesn't exist, so check that the user is allowed to create new terms.
                            if (!current_user_can($post_type_taxonomies[$taxonomy]->cap->edit_terms)) {
                                return new IXR_Error(401, __('Sorry, you are not allowed to add a term to one of the given taxonomies.'));
                            }

                            // Create the new term.
                            $term_info = wp_insert_term($term_name, $taxonomy);
                            if (is_wp_error($term_info)) {
                                return new IXR_Error(500, $term_info->get_error_message());
                            }

                            $terms[$taxonomy][] = (int)$term_info['term_id'];
                        } else {
                            $terms[$taxonomy][] = (int)$term->term_id;
                        }
                    }
                }
            }

            $post_data['tax_input'] = $terms;
            unset($post_data['terms'], $post_data['terms_names']);
        }

        if (isset($post_data['post_format'])) {
            $format = set_post_format($post_ID, $post_data['post_format']);

            if (is_wp_error($format)) {
                return new IXR_Error(500, $format->get_error_message());
            }

            unset($post_data['post_format']);
        }

        // Handle enclosures.
        $enclosure = isset($post_data['enclosure']) ? $post_data['enclosure'] : null;
        $this->add_enclosure_if_new($post_ID, $enclosure);

        $this->attach_uploads($post_ID, $post_data['post_content']);

        /**
         * Filters post data array to be inserted via XML-RPC.
         *
         * @param array $post_data Parsed array of post data.
         * @param array $content_struct Post data array.
         * @since 3.4.0
         *
         */
        $post_data = apply_filters('xmlrpc_wp_insert_post_data', $post_data, $content_struct);

        $post_ID = $update ? wp_update_post($post_data, true) : wp_insert_post($post_data, true);
        if (is_wp_error($post_ID)) {
            return new IXR_Error(500, $post_ID->get_error_message());
        }

        if (!$post_ID) {
            if ($update) {
                return new IXR_Error(401, __('Sorry, the post could not be updated.'));
            } else {
                return new IXR_Error(401, __('Sorry, the post could not be created.'));
            }
        }

        return strval($post_ID);
    }

    /**
     * Edit a post for any registered post type.
     *
     * The $content_struct parameter only needs to contain fields that
     * should be changed. All other fields will retain their existing values.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id Blog ID (unused).
     * @type string $username Username.
     * @type string $password Password.
     * @type int $post_id Post ID.
     * @type array $content_struct Extra content arguments.
     * }
     * @return true|IXR_Error True on success, IXR_Error on failure.
     * @since 3.4.0
     *
     */
    public function wp_editPost($args)
    {
        if (!$this->minimum_args($args, 5)) {
            return $this->error;
        }

        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        $post_id = (int)$args[3];
        $content_struct = $args[4];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.editPost');

        $post = get_post($post_id, ARRAY_A);

        if (empty($post['ID'])) {
            return new IXR_Error(404, __('Invalid post ID.'));
        }

        if (isset($content_struct['if_not_modified_since'])) {
            // If the post has been modified since the date provided, return an error.
            if (mysql2date('U', $post['post_modified_gmt']) > $content_struct['if_not_modified_since']->getTimestamp()) {
                return new IXR_Error(409, __('There is a revision of this post that is more recent.'));
            }
        }

        // Convert the date field back to IXR form.
        $post['post_date'] = $this->_convert_date($post['post_date']);

        /*
		 * Ignore the existing GMT date if it is empty or a non-GMT date was supplied in $content_struct,
		 * since _insert_post() will ignore the non-GMT date if the GMT date is set.
		 */
        if ('0000-00-00 00:00:00' === $post['post_date_gmt'] || isset($content_struct['post_date'])) {
            unset($post['post_date_gmt']);
        } else {
            $post['post_date_gmt'] = $this->_convert_date($post['post_date_gmt']);
        }

        /*
		 * If the API client did not provide 'post_date', then we must not perpetuate the value that
		 * was stored in the database, or it will appear to be an intentional edit. Conveying it here
		 * as if it was coming from the API client will cause an otherwise zeroed out 'post_date_gmt'
		 * to get set with the value that was originally stored in the database when the draft was created.
		 */
        if (!isset($content_struct['post_date'])) {
            unset($post['post_date']);
        }

        $this->escape($post);
        $merged_content_struct = array_merge($post, $content_struct);

        $retval = $this->_insert_post($user, $merged_content_struct);
        if ($retval instanceof IXR_Error) {
            return $retval;
        }

        return true;
    }

    /**
     * Delete a post for any registered post type.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id Blog ID (unused).
     * @type string $username Username.
     * @type string $password Password.
     * @type int $post_id Post ID.
     * }
     * @return true|IXR_Error True on success, IXR_Error instance on failure.
     * @since 3.4.0
     *
     * @see wp_delete_post()
     *
     */
    public function wp_deletePost($args)
    {
        if (!$this->minimum_args($args, 4)) {
            return $this->error;
        }

        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        $post_id = (int)$args[3];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.deletePost');

        $post = get_post($post_id, ARRAY_A);
        if (empty($post['ID'])) {
            return new IXR_Error(404, __('Invalid post ID.'));
        }

        if (!current_user_can('delete_post', $post_id)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to delete this post.'));
        }

        $result = wp_delete_post($post_id);

        if (!$result) {
            return new IXR_Error(500, __('Sorry, the post could not be deleted.'));
        }

        return true;
    }

    /**
     * Retrieve a post.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id Blog ID (unused).
     * @type string $username Username.
     * @type string $password Password.
     * @type int $post_id Post ID.
     * @type array $fields The subset of post type fields to return.
     * }
     * @return array|IXR_Error Array contains (based on $fields parameter):
     *  - 'post_id'
     *  - 'post_title'
     *  - 'post_date'
     *  - 'post_date_gmt'
     *  - 'post_modified'
     *  - 'post_modified_gmt'
     *  - 'post_status'
     *  - 'post_type'
     *  - 'post_name'
     *  - 'post_author'
     *  - 'post_password'
     *  - 'post_excerpt'
     *  - 'post_content'
     *  - 'link'
     *  - 'comment_status'
     *  - 'ping_status'
     *  - 'sticky'
     *  - 'custom_fields'
     *  - 'terms'
     *  - 'categories'
     *  - 'tags'
     *  - 'enclosure'
     * @since 3.4.0
     *
     * The optional $fields parameter specifies what fields will be included
     * in the response array. This should be a list of field names. 'post_id' will
     * always be included in the response regardless of the value of $fields.
     *
     * Instead of, or in addition to, individual field names, conceptual group
     * names can be used to specify multiple fields. The available conceptual
     * groups are 'post' (all basic fields), 'taxonomies', 'custom_fields',
     * and 'enclosure'.
     *
     * @see get_post()
     *
     */
    public function wp_getPost($args)
    {
        if (!$this->minimum_args($args, 4)) {
            return $this->error;
        }

        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        $post_id = (int)$args[3];

        if (isset($args[4])) {
            $fields = $args[4];
        } else {
            /**
             * Filters the list of post query fields used by the given XML-RPC method.
             *
             * @param array $fields Array of post fields. Default array contains 'post', 'terms', and 'custom_fields'.
             * @param string $method Method name.
             * @since 3.4.0
             *
             */
            $fields = apply_filters('xmlrpc_default_post_fields', array('post', 'terms', 'custom_fields'), 'wp.getPost');
        }

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.getPost');

        $post = get_post($post_id, ARRAY_A);

        if (empty($post['ID'])) {
            return new IXR_Error(404, __('Invalid post ID.'));
        }

        if (!current_user_can('edit_post', $post_id)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to edit this post.'));
        }

        return $this->_prepare_post($post, $fields);
    }

    /**
     * Retrieve posts.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id Blog ID (unused).
     * @type string $username Username.
     * @type string $password Password.
     * @type array $filter Optional. Modifies the query used to retrieve posts. Accepts 'post_type',
     *                            'post_status', 'number', 'offset', 'orderby', 's', and 'order'.
     *                            Default empty array.
     * @type array $fields Optional. The subset of post type fields to return in the response array.
     * }
     * @return array|IXR_Error Array contains a collection of posts.
     * @see wp_getPost() for more on `$fields`
     * @see get_posts() for more on `$filter` values
     *
     * @since 3.4.0
     *
     * @see wp_get_recent_posts()
     */
    public function wp_getPosts($args)
    {
        if (!$this->minimum_args($args, 3)) {
            return $this->error;
        }

        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        $filter = isset($args[3]) ? $args[3] : array();

        if (isset($args[4])) {
            $fields = $args[4];
        } else {
            /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
            $fields = apply_filters('xmlrpc_default_post_fields', array('post', 'terms', 'custom_fields'), 'wp.getPosts');
        }

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.getPosts');

        $query = array();

        if (isset($filter['post_type'])) {
            $post_type = get_post_type_object($filter['post_type']);
            if (!((bool)$post_type)) {
                return new IXR_Error(403, __('Invalid post type.'));
            }
        } else {
            $post_type = get_post_type_object('post');
        }

        if (!current_user_can($post_type->cap->edit_posts)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to edit posts in this post type.'));
        }

        $query['post_type'] = $post_type->name;

        if (isset($filter['post_status'])) {
            $query['post_status'] = $filter['post_status'];
        }

        if (isset($filter['number'])) {
            $query['numberposts'] = absint($filter['number']);
        }

        if (isset($filter['offset'])) {
            $query['offset'] = absint($filter['offset']);
        }

        if (isset($filter['orderby'])) {
            $query['orderby'] = $filter['orderby'];

            if (isset($filter['order'])) {
                $query['order'] = $filter['order'];
            }
        }

        if (isset($filter['s'])) {
            $query['s'] = $filter['s'];
        }

        $posts_list = wp_get_recent_posts($query);

        if (!$posts_list) {
            return array();
        }

        // Holds all the posts data.
        $struct = array();

        foreach ($posts_list as $post) {
            if (!current_user_can('edit_post', $post['ID'])) {
                continue;
            }

            $struct[] = $this->_prepare_post($post, $fields);
        }

        return $struct;
    }

    /**
     * Create a new term.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id Blog ID (unused).
     * @type string $username Username.
     * @type string $password Password.
     * @type array $content_struct Content struct for adding a new term. The struct must contain
     *                                  the term 'name' and 'taxonomy'. Optional accepted values include
     *                                  'parent', 'description', and 'slug'.
     * }
     * @return int|IXR_Error The term ID on success, or an IXR_Error object on failure.
     * @since 3.4.0
     *
     * @see wp_insert_term()
     *
     */
    public function wp_newTerm($args)
    {
        if (!$this->minimum_args($args, 4)) {
            return $this->error;
        }

        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        $content_struct = $args[3];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.newTerm');

        if (!taxonomy_exists($content_struct['taxonomy'])) {
            return new IXR_Error(403, __('Invalid taxonomy.'));
        }

        $taxonomy = get_taxonomy($content_struct['taxonomy']);

        if (!current_user_can($taxonomy->cap->edit_terms)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to create terms in this taxonomy.'));
        }

        $taxonomy = (array)$taxonomy;

        // Hold the data of the term.
        $term_data = array();

        $term_data['name'] = trim($content_struct['name']);
        if (empty($term_data['name'])) {
            return new IXR_Error(403, __('The term name cannot be empty.'));
        }

        if (isset($content_struct['parent'])) {
            if (!$taxonomy['hierarchical']) {
                return new IXR_Error(403, __('This taxonomy is not hierarchical.'));
            }

            $parent_term_id = (int)$content_struct['parent'];
            $parent_term = get_term($parent_term_id, $taxonomy['name']);

            if (is_wp_error($parent_term)) {
                return new IXR_Error(500, $parent_term->get_error_message());
            }

            if (!$parent_term) {
                return new IXR_Error(403, __('Parent term does not exist.'));
            }

            $term_data['parent'] = $content_struct['parent'];
        }

        if (isset($content_struct['description'])) {
            $term_data['description'] = $content_struct['description'];
        }

        if (isset($content_struct['slug'])) {
            $term_data['slug'] = $content_struct['slug'];
        }

        $term = wp_insert_term($term_data['name'], $taxonomy['name'], $term_data);

        if (is_wp_error($term)) {
            return new IXR_Error(500, $term->get_error_message());
        }

        if (!$term) {
            return new IXR_Error(500, __('Sorry, the term could not be created.'));
        }

        // Add term meta.
        if (isset($content_struct['custom_fields'])) {
            $this->set_term_custom_fields($term['term_id'], $content_struct['custom_fields']);
        }

        return strval($term['term_id']);
    }

    /**
     * Edit a term.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id Blog ID (unused).
     * @type string $username Username.
     * @type string $password Password.
     * @type int $term_id Term ID.
     * @type array $content_struct Content struct for editing a term. The struct must contain the
     *                                  term ''taxonomy'. Optional accepted values include 'name', 'parent',
     *                                  'description', and 'slug'.
     * }
     * @return true|IXR_Error True on success, IXR_Error instance on failure.
     * @since 3.4.0
     *
     * @see wp_update_term()
     *
     */
    public function wp_editTerm($args)
    {
        if (!$this->minimum_args($args, 5)) {
            return $this->error;
        }

        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        $term_id = (int)$args[3];
        $content_struct = $args[4];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.editTerm');

        if (!taxonomy_exists($content_struct['taxonomy'])) {
            return new IXR_Error(403, __('Invalid taxonomy.'));
        }

        $taxonomy = get_taxonomy($content_struct['taxonomy']);

        $taxonomy = (array)$taxonomy;

        // Hold the data of the term.
        $term_data = array();

        $term = get_term($term_id, $content_struct['taxonomy']);

        if (is_wp_error($term)) {
            return new IXR_Error(500, $term->get_error_message());
        }

        if (!$term) {
            return new IXR_Error(404, __('Invalid term ID.'));
        }

        if (!current_user_can('edit_term', $term_id)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to edit this term.'));
        }

        if (isset($content_struct['name'])) {
            $term_data['name'] = trim($content_struct['name']);

            if (empty($term_data['name'])) {
                return new IXR_Error(403, __('The term name cannot be empty.'));
            }
        }

        if (!empty($content_struct['parent'])) {
            if (!$taxonomy['hierarchical']) {
                return new IXR_Error(403, __('Cannot set parent term, taxonomy is not hierarchical.'));
            }

            $parent_term_id = (int)$content_struct['parent'];
            $parent_term = get_term($parent_term_id, $taxonomy['name']);

            if (is_wp_error($parent_term)) {
                return new IXR_Error(500, $parent_term->get_error_message());
            }

            if (!$parent_term) {
                return new IXR_Error(403, __('Parent term does not exist.'));
            }

            $term_data['parent'] = $content_struct['parent'];
        }

        if (isset($content_struct['description'])) {
            $term_data['description'] = $content_struct['description'];
        }

        if (isset($content_struct['slug'])) {
            $term_data['slug'] = $content_struct['slug'];
        }

        $term = wp_update_term($term_id, $taxonomy['name'], $term_data);

        if (is_wp_error($term)) {
            return new IXR_Error(500, $term->get_error_message());
        }

        if (!$term) {
            return new IXR_Error(500, __('Sorry, editing the term failed.'));
        }

        // Update term meta.
        if (isset($content_struct['custom_fields'])) {
            $this->set_term_custom_fields($term_id, $content_struct['custom_fields']);
        }

        return true;
    }

    /**
     * Delete a term.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id Blog ID (unused).
     * @type string $username Username.
     * @type string $password Password.
     * @type string $taxnomy_name Taxonomy name.
     * @type int $term_id Term ID.
     * }
     * @return bool|IXR_Error True on success, IXR_Error instance on failure.
     * @since 3.4.0
     *
     * @see wp_delete_term()
     *
     */
    public function wp_deleteTerm($args)
    {
        if (!$this->minimum_args($args, 5)) {
            return $this->error;
        }

        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        $taxonomy = $args[3];
        $term_id = (int)$args[4];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.deleteTerm');

        if (!taxonomy_exists($taxonomy)) {
            return new IXR_Error(403, __('Invalid taxonomy.'));
        }

        $taxonomy = get_taxonomy($taxonomy);
        $term = get_term($term_id, $taxonomy->name);

        if (is_wp_error($term)) {
            return new IXR_Error(500, $term->get_error_message());
        }

        if (!$term) {
            return new IXR_Error(404, __('Invalid term ID.'));
        }

        if (!current_user_can('delete_term', $term_id)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to delete this term.'));
        }

        $result = wp_delete_term($term_id, $taxonomy->name);

        if (is_wp_error($result)) {
            return new IXR_Error(500, $term->get_error_message());
        }

        if (!$result) {
            return new IXR_Error(500, __('Sorry, deleting the term failed.'));
        }

        return $result;
    }

    /**
     * Retrieve a term.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id Blog ID (unused).
     * @type string $username Username.
     * @type string $password Password.
     * @type string $taxnomy Taxonomy name.
     * @type string $term_id Term ID.
     * }
     * @return array|IXR_Error IXR_Error on failure, array on success, containing:
     *  - 'term_id'
     *  - 'name'
     *  - 'slug'
     *  - 'term_group'
     *  - 'term_taxonomy_id'
     *  - 'taxonomy'
     *  - 'description'
     *  - 'parent'
     *  - 'count'
     * @since 3.4.0
     *
     * @see get_term()
     *
     */
    public function wp_getTerm($args)
    {
        if (!$this->minimum_args($args, 5)) {
            return $this->error;
        }

        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        $taxonomy = $args[3];
        $term_id = (int)$args[4];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.getTerm');

        if (!taxonomy_exists($taxonomy)) {
            return new IXR_Error(403, __('Invalid taxonomy.'));
        }

        $taxonomy = get_taxonomy($taxonomy);

        $term = get_term($term_id, $taxonomy->name, ARRAY_A);

        if (is_wp_error($term)) {
            return new IXR_Error(500, $term->get_error_message());
        }

        if (!$term) {
            return new IXR_Error(404, __('Invalid term ID.'));
        }

        if (!current_user_can('assign_term', $term_id)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to assign this term.'));
        }

        return $this->_prepare_term($term);
    }

    /**
     * Retrieve all terms for a taxonomy.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id Blog ID (unused).
     * @type string $username Username.
     * @type string $password Password.
     * @type string $taxnomy Taxonomy name.
     * @type array $filter Optional. Modifies the query used to retrieve posts. Accepts 'number',
     *                            'offset', 'orderby', 'order', 'hide_empty', and 'search'. Default empty array.
     * }
     * @return array|IXR_Error An associative array of terms data on success, IXR_Error instance otherwise.
     * @since 3.4.0
     *
     * The optional $filter parameter modifies the query used to retrieve terms.
     * Accepted keys are 'number', 'offset', 'orderby', 'order', 'hide_empty', and 'search'.
     *
     * @see get_terms()
     *
     */
    public function wp_getTerms($args)
    {
        if (!$this->minimum_args($args, 4)) {
            return $this->error;
        }

        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        $taxonomy = $args[3];
        $filter = isset($args[4]) ? $args[4] : array();

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.getTerms');

        if (!taxonomy_exists($taxonomy)) {
            return new IXR_Error(403, __('Invalid taxonomy.'));
        }

        $taxonomy = get_taxonomy($taxonomy);

        if (!current_user_can($taxonomy->cap->assign_terms)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to assign terms in this taxonomy.'));
        }

        $query = array('taxonomy' => $taxonomy->name);

        if (isset($filter['number'])) {
            $query['number'] = absint($filter['number']);
        }

        if (isset($filter['offset'])) {
            $query['offset'] = absint($filter['offset']);
        }

        if (isset($filter['orderby'])) {
            $query['orderby'] = $filter['orderby'];

            if (isset($filter['order'])) {
                $query['order'] = $filter['order'];
            }
        }

        if (isset($filter['hide_empty'])) {
            $query['hide_empty'] = $filter['hide_empty'];
        } else {
            $query['get'] = 'all';
        }

        if (isset($filter['search'])) {
            $query['search'] = $filter['search'];
        }

        $terms = get_terms($query);

        if (is_wp_error($terms)) {
            return new IXR_Error(500, $terms->get_error_message());
        }

        $struct = array();

        foreach ($terms as $term) {
            $struct[] = $this->_prepare_term($term);
        }

        return $struct;
    }

    /**
     * Retrieve a taxonomy.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id Blog ID (unused).
     * @type string $username Username.
     * @type string $password Password.
     * @type string $taxnomy Taxonomy name.
     * @type array $fields Optional. Array of taxonomy fields to limit to in the return.
     *                            Accepts 'labels', 'cap', 'menu', and 'object_type'.
     *                            Default empty array.
     * }
     * @return array|IXR_Error An array of taxonomy data on success, IXR_Error instance otherwise.
     * @since 3.4.0
     *
     * @see get_taxonomy()
     *
     */
    public function wp_getTaxonomy($args)
    {
        if (!$this->minimum_args($args, 4)) {
            return $this->error;
        }

        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        $taxonomy = $args[3];

        if (isset($args[4])) {
            $fields = $args[4];
        } else {
            /**
             * Filters the taxonomy query fields used by the given XML-RPC method.
             *
             * @param array $fields An array of taxonomy fields to retrieve.
             * @param string $method The method name.
             * @since 3.4.0
             *
             */
            $fields = apply_filters('xmlrpc_default_taxonomy_fields', array('labels', 'cap', 'object_type'), 'wp.getTaxonomy');
        }

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.getTaxonomy');

        if (!taxonomy_exists($taxonomy)) {
            return new IXR_Error(403, __('Invalid taxonomy.'));
        }

        $taxonomy = get_taxonomy($taxonomy);

        if (!current_user_can($taxonomy->cap->assign_terms)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to assign terms in this taxonomy.'));
        }

        return $this->_prepare_taxonomy($taxonomy, $fields);
    }

    /**
     * Retrieve all taxonomies.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id Blog ID (unused).
     * @type string $username Username.
     * @type string $password Password.
     * @type array $filter Optional. An array of arguments for retrieving taxonomies.
     * @type array $fields Optional. The subset of taxonomy fields to return.
     * }
     * @return array|IXR_Error An associative array of taxonomy data with returned fields determined
     *                         by `$fields`, or an IXR_Error instance on failure.
     * @since 3.4.0
     *
     * @see get_taxonomies()
     *
     */
    public function wp_getTaxonomies($args)
    {
        if (!$this->minimum_args($args, 3)) {
            return $this->error;
        }

        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        $filter = isset($args[3]) ? $args[3] : array('public' => true);

        if (isset($args[4])) {
            $fields = $args[4];
        } else {
            /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
            $fields = apply_filters('xmlrpc_default_taxonomy_fields', array('labels', 'cap', 'object_type'), 'wp.getTaxonomies');
        }

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.getTaxonomies');

        $taxonomies = get_taxonomies($filter, 'objects');

        // Holds all the taxonomy data.
        $struct = array();

        foreach ($taxonomies as $taxonomy) {
            // Capability check for post types.
            if (!current_user_can($taxonomy->cap->assign_terms)) {
                continue;
            }

            $struct[] = $this->_prepare_taxonomy($taxonomy, $fields);
        }

        return $struct;
    }

    /**
     * Retrieve a user.
     *
     * The optional $fields parameter specifies what fields will be included
     * in the response array. This should be a list of field names. 'user_id' will
     * always be included in the response regardless of the value of $fields.
     *
     * Instead of, or in addition to, individual field names, conceptual group
     * names can be used to specify multiple fields. The available conceptual
     * groups are 'basic' and 'all'.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * @type int $user_id
     * @type array $fields (optional)
     * }
     * @return array|IXR_Error Array contains (based on $fields parameter):
     *  - 'user_id'
     *  - 'username'
     *  - 'first_name'
     *  - 'last_name'
     *  - 'registered'
     *  - 'bio'
     *  - 'email'
     *  - 'nickname'
     *  - 'nicename'
     *  - 'url'
     *  - 'display_name'
     *  - 'roles'
     * @uses get_userdata()
     *
     */
    public function wp_getUser($args)
    {
        if (!$this->minimum_args($args, 4)) {
            return $this->error;
        }

        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        $user_id = (int)$args[3];

        if (isset($args[4])) {
            $fields = $args[4];
        } else {
            /**
             * Filters the default user query fields used by the given XML-RPC method.
             *
             * @param array $fields User query fields for given method. Default 'all'.
             * @param string $method The method name.
             * @since 3.5.0
             *
             */
            $fields = apply_filters('xmlrpc_default_user_fields', array('all'), 'wp.getUser');
        }

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.getUser');

        if (!current_user_can('edit_user', $user_id)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to edit this user.'));
        }

        $user_data = get_userdata($user_id);

        if (!$user_data) {
            return new IXR_Error(404, __('Invalid user ID.'));
        }

        return $this->_prepare_user($user_data, $fields);
    }

    /**
     * Retrieve users.
     *
     * The optional $filter parameter modifies the query used to retrieve users.
     * Accepted keys are 'number' (default: 50), 'offset' (default: 0), 'role',
     * 'who', 'orderby', and 'order'.
     *
     * The optional $fields parameter specifies what fields will be included
     * in the response array.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * @type array $filter (optional)
     * @type array $fields (optional)
     * }
     * @return array|IXR_Error users data
     * @uses get_users()
     * @see  wp_getUser() for more on $fields and return values
     *
     */
    public function wp_getUsers($args)
    {
        if (!$this->minimum_args($args, 3)) {
            return $this->error;
        }

        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        $filter = isset($args[3]) ? $args[3] : array();

        if (isset($args[4])) {
            $fields = $args[4];
        } else {
            /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
            $fields = apply_filters('xmlrpc_default_user_fields', array('all'), 'wp.getUsers');
        }

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.getUsers');

        if (!current_user_can('list_users')) {
            return new IXR_Error(401, __('Sorry, you are not allowed to list users.'));
        }

        $query = array('fields' => 'all_with_meta');

        $query['number'] = (isset($filter['number'])) ? absint($filter['number']) : 50;
        $query['offset'] = (isset($filter['offset'])) ? absint($filter['offset']) : 0;

        if (isset($filter['orderby'])) {
            $query['orderby'] = $filter['orderby'];

            if (isset($filter['order'])) {
                $query['order'] = $filter['order'];
            }
        }

        if (isset($filter['role'])) {
            if (get_role($filter['role']) === null) {
                return new IXR_Error(403, __('Invalid role.'));
            }

            $query['role'] = $filter['role'];
        }

        if (isset($filter['who'])) {
            $query['who'] = $filter['who'];
        }

        $users = get_users($query);

        $_users = array();
        foreach ($users as $user_data) {
            if (current_user_can('edit_user', $user_data->ID)) {
                $_users[] = $this->_prepare_user($user_data, $fields);
            }
        }
        return $_users;
    }

    /**
     * Retrieve information about the requesting user.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * @type array $fields (optional)
     * }
     * @return array|IXR_Error (@see wp_getUser)
     * @uses get_userdata()
     *
     */
    public function wp_getProfile($args)
    {
        if (!$this->minimum_args($args, 3)) {
            return $this->error;
        }

        $this->escape($args);

        $username = $args[1];
        $password = $args[2];

        if (isset($args[3])) {
            $fields = $args[3];
        } else {
            /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
            $fields = apply_filters('xmlrpc_default_user_fields', array('all'), 'wp.getProfile');
        }

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.getProfile');

        if (!current_user_can('edit_user', $user->ID)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to edit your profile.'));
        }

        $user_data = get_userdata($user->ID);

        return $this->_prepare_user($user_data, $fields);
    }

    /**
     * Edit user's profile.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * @type array $content_struct It can optionally contain:
     *      - 'first_name'
     *      - 'last_name'
     *      - 'website'
     *      - 'display_name'
     *      - 'nickname'
     *      - 'nicename'
     *      - 'bio'
     * }
     * @return true|IXR_Error True, on success.
     * @uses wp_update_user()
     *
     */
    public function wp_editProfile($args)
    {
        if (!$this->minimum_args($args, 4)) {
            return $this->error;
        }

        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        $content_struct = $args[3];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.editProfile');

        if (!current_user_can('edit_user', $user->ID)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to edit your profile.'));
        }

        // Holds data of the user.
        $user_data = array();
        $user_data['ID'] = $user->ID;

        // Only set the user details if they were given.
        if (isset($content_struct['first_name'])) {
            $user_data['first_name'] = $content_struct['first_name'];
        }

        if (isset($content_struct['last_name'])) {
            $user_data['last_name'] = $content_struct['last_name'];
        }

        if (isset($content_struct['url'])) {
            $user_data['user_url'] = $content_struct['url'];
        }

        if (isset($content_struct['display_name'])) {
            $user_data['display_name'] = $content_struct['display_name'];
        }

        if (isset($content_struct['nickname'])) {
            $user_data['nickname'] = $content_struct['nickname'];
        }

        if (isset($content_struct['nicename'])) {
            $user_data['user_nicename'] = $content_struct['nicename'];
        }

        if (isset($content_struct['bio'])) {
            $user_data['description'] = $content_struct['bio'];
        }

        $result = wp_update_user($user_data);

        if (is_wp_error($result)) {
            return new IXR_Error(500, $result->get_error_message());
        }

        if (!$result) {
            return new IXR_Error(500, __('Sorry, the user could not be updated.'));
        }

        return true;
    }

    /**
     * Retrieve page.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type int $page_id
     * @type string $username
     * @type string $password
     * }
     * @return array|IXR_Error
     * @since 2.2.0
     *
     */
    public function wp_getPage($args)
    {
        $this->escape($args);

        $page_id = (int)$args[1];
        $username = $args[2];
        $password = $args[3];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        $page = get_post($page_id);
        if (!$page) {
            return new IXR_Error(404, __('Invalid post ID.'));
        }

        if (!current_user_can('edit_page', $page_id)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to edit this page.'));
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.getPage');

        // If we found the page then format the data.
        if ($page->ID && ('page' === $page->post_type)) {
            return $this->_prepare_page($page);
        } else {
            // If the page doesn't exist, indicate that.
            return new IXR_Error(404, __('Sorry, no such page.'));
        }
    }

    /**
     * Retrieve Pages.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * @type int $num_pages
     * }
     * @return array|IXR_Error
     * @since 2.2.0
     *
     */
    public function wp_getPages($args)
    {
        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        $num_pages = isset($args[3]) ? (int)$args[3] : 10;

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        if (!current_user_can('edit_pages')) {
            return new IXR_Error(401, __('Sorry, you are not allowed to edit pages.'));
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.getPages');

        $pages = get_posts(
            array(
                'post_type' => 'page',
                'post_status' => 'any',
                'numberposts' => $num_pages,
            )
        );
        $num_pages = count($pages);

        // If we have pages, put together their info.
        if ($num_pages >= 1) {
            $pages_struct = array();

            foreach ($pages as $page) {
                if (current_user_can('edit_page', $page->ID)) {
                    $pages_struct[] = $this->_prepare_page($page);
                }
            }

            return $pages_struct;
        }

        return array();
    }

    /**
     * Create new page.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * @type array $content_struct
     * }
     * @return int|IXR_Error
     * @since 2.2.0
     *
     * @see wp_xmlrpc_server::mw_newPost()
     *
     */
    public function wp_newPage($args)
    {
        // Items not escaped here will be escaped in wp_newPost().
        $username = $this->escape($args[1]);
        $password = $this->escape($args[2]);

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.newPage');

        // Mark this as content for a page.
        $args[3]['post_type'] = 'page';

        // Let mw_newPost() do all of the heavy lifting.
        return $this->mw_newPost($args);
    }

    /**
     * Delete page.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * @type int $page_id
     * }
     * @return true|IXR_Error True, if success.
     * @since 2.2.0
     *
     */
    public function wp_deletePage($args)
    {
        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        $page_id = (int)$args[3];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.deletePage');

        // Get the current page based on the 'page_id' and
        // make sure it is a page and not a post.
        $actual_page = get_post($page_id, ARRAY_A);
        if (!$actual_page || ('page' !== $actual_page['post_type'])) {
            return new IXR_Error(404, __('Sorry, no such page.'));
        }

        // Make sure the user can delete pages.
        if (!current_user_can('delete_page', $page_id)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to delete this page.'));
        }

        // Attempt to delete the page.
        $result = wp_delete_post($page_id);
        if (!$result) {
            return new IXR_Error(500, __('Failed to delete the page.'));
        }

        /**
         * Fires after a page has been successfully deleted via XML-RPC.
         *
         * @param int $page_id ID of the deleted page.
         * @param array $args An array of arguments to delete the page.
         * @since 3.4.0
         *
         */
        do_action('xmlrpc_call_success_wp_deletePage', $page_id, $args); // phpcs:ignore WordPress.NamingConventions.ValidHookName.NotLowercase

        return true;
    }

    /**
     * Edit page.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type int $page_id
     * @type string $username
     * @type string $password
     * @type string $content
     * @type string $publish
     * }
     * @return array|IXR_Error
     * @since 2.2.0
     *
     */
    public function wp_editPage($args)
    {
        // Items will be escaped in mw_editPost().
        $page_id = (int)$args[1];
        $username = $args[2];
        $password = $args[3];
        $content = $args[4];
        $publish = $args[5];

        $escaped_username = $this->escape($username);
        $escaped_password = $this->escape($password);

        $user = $this->login($escaped_username, $escaped_password);
        if (!$user) {
            return $this->error;
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.editPage');

        // Get the page data and make sure it is a page.
        $actual_page = get_post($page_id, ARRAY_A);
        if (!$actual_page || ('page' !== $actual_page['post_type'])) {
            return new IXR_Error(404, __('Sorry, no such page.'));
        }

        // Make sure the user is allowed to edit pages.
        if (!current_user_can('edit_page', $page_id)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to edit this page.'));
        }

        // Mark this as content for a page.
        $content['post_type'] = 'page';

        // Arrange args in the way mw_editPost() understands.
        $args = array(
            $page_id,
            $username,
            $password,
            $content,
            $publish,
        );

        // Let mw_editPost() do all of the heavy lifting.
        return $this->mw_editPost($args);
    }

    /**
     * Retrieve page list.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * }
     * @return array|IXR_Error
     * @since 2.2.0
     *
     * @global wpdb $wpdb WordPress database abstraction object.
     *
     */
    public function wp_getPageList($args)
    {
        global $wpdb;

        $this->escape($args);

        $username = $args[1];
        $password = $args[2];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        if (!current_user_can('edit_pages')) {
            return new IXR_Error(401, __('Sorry, you are not allowed to edit pages.'));
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.getPageList');

        // Get list of page IDs and titles.
        $page_list = $wpdb->get_results(
            "
			SELECT ID page_id,
				post_title page_title,
				post_parent page_parent_id,
				post_date_gmt,
				post_date,
				post_status
			FROM {$wpdb->posts}
			WHERE post_type = 'page'
			ORDER BY ID
		"
        );

        // The date needs to be formatted properly.
        $num_pages = count($page_list);
        for ($i = 0; $i < $num_pages; $i++) {
            $page_list[$i]->dateCreated = $this->_convert_date($page_list[$i]->post_date);
            $page_list[$i]->date_created_gmt = $this->_convert_date_gmt($page_list[$i]->post_date_gmt, $page_list[$i]->post_date);

            unset($page_list[$i]->post_date_gmt);
            unset($page_list[$i]->post_date);
            unset($page_list[$i]->post_status);
        }

        return $page_list;
    }

    /**
     * Retrieve authors list.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * }
     * @return array|IXR_Error
     * @since 2.2.0
     *
     */
    public function wp_getAuthors($args)
    {
        $this->escape($args);

        $username = $args[1];
        $password = $args[2];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        if (!current_user_can('edit_posts')) {
            return new IXR_Error(401, __('Sorry, you are not allowed to edit posts.'));
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.getAuthors');

        $authors = array();
        foreach (get_users(array('fields' => array('ID', 'user_login', 'display_name'))) as $user) {
            $authors[] = array(
                'user_id' => $user->ID,
                'user_login' => $user->user_login,
                'display_name' => $user->display_name,
            );
        }

        return $authors;
    }

    /**
     * Get list of all tags
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * }
     * @return array|IXR_Error
     * @since 2.7.0
     *
     */
    public function wp_getTags($args)
    {
        $this->escape($args);

        $username = $args[1];
        $password = $args[2];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        if (!current_user_can('edit_posts')) {
            return new IXR_Error(401, __('Sorry, you must be able to edit posts on this site in order to view tags.'));
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.getKeywords');

        $tags = array();

        $all_tags = get_tags();
        if ($all_tags) {
            foreach ((array)$all_tags as $tag) {
                $struct = array();
                $struct['tag_id'] = $tag->term_id;
                $struct['name'] = $tag->name;
                $struct['count'] = $tag->count;
                $struct['slug'] = $tag->slug;
                $struct['html_url'] = esc_html(get_tag_link($tag->term_id));
                $struct['rss_url'] = esc_html(get_tag_feed_link($tag->term_id));

                $tags[] = $struct;
            }
        }

        return $tags;
    }

    /**
     * Create new category.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * @type array $category
     * }
     * @return int|IXR_Error Category ID.
     * @since 2.2.0
     *
     */
    public function wp_newCategory($args)
    {
        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        $category = $args[3];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.newCategory');

        // Make sure the user is allowed to add a category.
        if (!current_user_can('manage_categories')) {
            return new IXR_Error(401, __('Sorry, you are not allowed to add a category.'));
        }

        // If no slug was provided, make it empty
        // so that WordPress will generate one.
        if (empty($category['slug'])) {
            $category['slug'] = '';
        }

        // If no parent_id was provided, make it empty
        // so that it will be a top-level page (no parent).
        if (!isset($category['parent_id'])) {
            $category['parent_id'] = '';
        }

        // If no description was provided, make it empty.
        if (empty($category['description'])) {
            $category['description'] = '';
        }

        $new_category = array(
            'cat_name' => $category['name'],
            'category_nicename' => $category['slug'],
            'category_parent' => $category['parent_id'],
            'category_description' => $category['description'],
        );

        $cat_id = wp_insert_category($new_category, true);
        if (is_wp_error($cat_id)) {
            if ('term_exists' == $cat_id->get_error_code()) {
                return (int)$cat_id->get_error_data();
            } else {
                return new IXR_Error(500, __('Sorry, the category could not be created.'));
            }
        } elseif (!$cat_id) {
            return new IXR_Error(500, __('Sorry, the category could not be created.'));
        }

        /**
         * Fires after a new category has been successfully created via XML-RPC.
         *
         * @param int $cat_id ID of the new category.
         * @param array $args An array of new category arguments.
         * @since 3.4.0
         *
         */
        do_action('xmlrpc_call_success_wp_newCategory', $cat_id, $args); // phpcs:ignore WordPress.NamingConventions.ValidHookName.NotLowercase

        return $cat_id;
    }

    /**
     * Remove category.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * @type int $category_id
     * }
     * @return bool|IXR_Error See wp_delete_term() for return info.
     * @since 2.5.0
     *
     */
    public function wp_deleteCategory($args)
    {
        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        $category_id = (int)$args[3];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.deleteCategory');

        if (!current_user_can('delete_term', $category_id)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to delete this category.'));
        }

        $status = wp_delete_term($category_id, 'category');

        if (true == $status) {
            /**
             * Fires after a category has been successfully deleted via XML-RPC.
             *
             * @param int $category_id ID of the deleted category.
             * @param array $args An array of arguments to delete the category.
             * @since 3.4.0
             *
             */
            do_action('xmlrpc_call_success_wp_deleteCategory', $category_id, $args); // phpcs:ignore WordPress.NamingConventions.ValidHookName.NotLowercase
        }

        return $status;
    }

    /**
     * Retrieve category list.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * @type array $category
     * @type int $max_results
     * }
     * @return array|IXR_Error
     * @since 2.2.0
     *
     */
    public function wp_suggestCategories($args)
    {
        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        $category = $args[3];
        $max_results = (int)$args[4];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        if (!current_user_can('edit_posts')) {
            return new IXR_Error(401, __('Sorry, you must be able to edit posts on this site in order to view categories.'));
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.suggestCategories');

        $category_suggestions = array();
        $args = array(
            'get' => 'all',
            'number' => $max_results,
            'name__like' => $category,
        );
        foreach ((array)get_categories($args) as $cat) {
            $category_suggestions[] = array(
                'category_id' => $cat->term_id,
                'category_name' => $cat->name,
            );
        }

        return $category_suggestions;
    }

    /**
     * Retrieve comment.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * @type int $comment_id
     * }
     * @return array|IXR_Error
     * @since 2.7.0
     *
     */
    public function wp_getComment($args)
    {
        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        $comment_id = (int)$args[3];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.getComment');

        $comment = get_comment($comment_id);
        if (!$comment) {
            return new IXR_Error(404, __('Invalid comment ID.'));
        }

        if (!current_user_can('edit_comment', $comment_id)) {
            return new IXR_Error(403, __('Sorry, you are not allowed to moderate or edit this comment.'));
        }

        return $this->_prepare_comment($comment);
    }

    /**
     * Retrieve comments.
     *
     * Besides the common blog_id (unused), username, and password arguments, it takes a filter
     * array as last argument.
     *
     * Accepted 'filter' keys are 'status', 'post_id', 'offset', and 'number'.
     *
     * The defaults are as follows:
     * - 'status' - Default is ''. Filter by status (e.g., 'approve', 'hold')
     * - 'post_id' - Default is ''. The post where the comment is posted. Empty string shows all comments.
     * - 'number' - Default is 10. Total number of media items to retrieve.
     * - 'offset' - Default is 0. See WP_Query::query() for more.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * @type array $struct
     * }
     * @return array|IXR_Error Contains a collection of comments. See wp_xmlrpc_server::wp_getComment() for a description of each item contents
     * @since 2.7.0
     *
     */
    public function wp_getComments($args)
    {
        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        $struct = isset($args[3]) ? $args[3] : array();

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.getComments');

        if (isset($struct['status'])) {
            $status = $struct['status'];
        } else {
            $status = '';
        }

        if (!current_user_can('moderate_comments') && 'approve' !== $status) {
            return new IXR_Error(401, __('Invalid comment status.'));
        }

        $post_id = '';
        if (isset($struct['post_id'])) {
            $post_id = absint($struct['post_id']);
        }

        $post_type = '';
        if (isset($struct['post_type'])) {
            $post_type_object = get_post_type_object($struct['post_type']);
            if (!$post_type_object || !post_type_supports($post_type_object->name, 'comments')) {
                return new IXR_Error(404, __('Invalid post type.'));
            }
            $post_type = $struct['post_type'];
        }

        $offset = 0;
        if (isset($struct['offset'])) {
            $offset = absint($struct['offset']);
        }

        $number = 10;
        if (isset($struct['number'])) {
            $number = absint($struct['number']);
        }

        $comments = get_comments(
            array(
                'status' => $status,
                'post_id' => $post_id,
                'offset' => $offset,
                'number' => $number,
                'post_type' => $post_type,
            )
        );

        $comments_struct = array();
        if (is_array($comments)) {
            foreach ($comments as $comment) {
                $comments_struct[] = $this->_prepare_comment($comment);
            }
        }

        return $comments_struct;
    }

    /**
     * Delete a comment.
     *
     * By default, the comment will be moved to the Trash instead of deleted.
     * See wp_delete_comment() for more information on this behavior.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * @type int $comment_ID
     * }
     * @return bool|IXR_Error See wp_delete_comment().
     * @since 2.7.0
     *
     */
    public function wp_deleteComment($args)
    {
        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        $comment_ID = (int)$args[3];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        if (!get_comment($comment_ID)) {
            return new IXR_Error(404, __('Invalid comment ID.'));
        }

        if (!current_user_can('edit_comment', $comment_ID)) {
            return new IXR_Error(403, __('Sorry, you are not allowed to delete this comment.'));
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.deleteComment');

        $status = wp_delete_comment($comment_ID);

        if ($status) {
            /**
             * Fires after a comment has been successfully deleted via XML-RPC.
             *
             * @param int $comment_ID ID of the deleted comment.
             * @param array $args An array of arguments to delete the comment.
             * @since 3.4.0
             *
             */
            do_action('xmlrpc_call_success_wp_deleteComment', $comment_ID, $args); // phpcs:ignore WordPress.NamingConventions.ValidHookName.NotLowercase
        }

        return $status;
    }

    /**
     * Edit comment.
     *
     * Besides the common blog_id (unused), username, and password arguments, it takes a
     * comment_id integer and a content_struct array as last argument.
     *
     * The allowed keys in the content_struct array are:
     *  - 'author'
     *  - 'author_url'
     *  - 'author_email'
     *  - 'content'
     *  - 'date_created_gmt'
     *  - 'status'. Common statuses are 'approve', 'hold', 'spam'. See get_comment_statuses() for more details
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * @type int $comment_ID
     * @type array $content_struct
     * }
     * @return true|IXR_Error True, on success.
     * @since 2.7.0
     *
     */
    public function wp_editComment($args)
    {
        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        $comment_ID = (int)$args[3];
        $content_struct = $args[4];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        if (!get_comment($comment_ID)) {
            return new IXR_Error(404, __('Invalid comment ID.'));
        }

        if (!current_user_can('edit_comment', $comment_ID)) {
            return new IXR_Error(403, __('Sorry, you are not allowed to moderate or edit this comment.'));
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.editComment');
        $comment = array(
            'comment_ID' => $comment_ID,
        );

        if (isset($content_struct['status'])) {
            $statuses = get_comment_statuses();
            $statuses = array_keys($statuses);

            if (!in_array($content_struct['status'], $statuses)) {
                return new IXR_Error(401, __('Invalid comment status.'));
            }

            $comment['comment_approved'] = $content_struct['status'];
        }

        // Do some timestamp voodoo.
        if (!empty($content_struct['date_created_gmt'])) {
            // We know this is supposed to be GMT, so we're going to slap that Z on there by force.
            $dateCreated = rtrim($content_struct['date_created_gmt']->getIso(), 'Z') . 'Z';
            $comment['comment_date'] = get_date_from_gmt($dateCreated);
            $comment['comment_date_gmt'] = iso8601_to_datetime($dateCreated, 'gmt');
        }

        if (isset($content_struct['content'])) {
            $comment['comment_content'] = $content_struct['content'];
        }

        if (isset($content_struct['author'])) {
            $comment['comment_author'] = $content_struct['author'];
        }

        if (isset($content_struct['author_url'])) {
            $comment['comment_author_url'] = $content_struct['author_url'];
        }

        if (isset($content_struct['author_email'])) {
            $comment['comment_author_email'] = $content_struct['author_email'];
        }

        $result = wp_update_comment($comment);
        if (is_wp_error($result)) {
            return new IXR_Error(500, $result->get_error_message());
        }

        if (!$result) {
            return new IXR_Error(500, __('Sorry, the comment could not be updated.'));
        }

        /**
         * Fires after a comment has been successfully updated via XML-RPC.
         *
         * @param int $comment_ID ID of the updated comment.
         * @param array $args An array of arguments to update the comment.
         * @since 3.4.0
         *
         */
        do_action('xmlrpc_call_success_wp_editComment', $comment_ID, $args); // phpcs:ignore WordPress.NamingConventions.ValidHookName.NotLowercase

        return true;
    }

    /**
     * Create new comment.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * @type string|int $post
     * @type array $content_struct
     * }
     * @return int|IXR_Error See wp_new_comment().
     * @since 2.7.0
     *
     */
    public function wp_newComment($args)
    {
        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        $post = $args[3];
        $content_struct = $args[4];

        /**
         * Filters whether to allow anonymous comments over XML-RPC.
         *
         * @param bool $allow Whether to allow anonymous commenting via XML-RPC.
         *                    Default false.
         * @since 2.7.0
         *
         */
        $allow_anon = apply_filters('xmlrpc_allow_anonymous_comments', false);

        $user = $this->login($username, $password);

        if (!$user) {
            $logged_in = false;
            if ($allow_anon && get_option('comment_registration')) {
                return new IXR_Error(403, __('Sorry, you must be logged in to comment.'));
            } elseif (!$allow_anon) {
                return $this->error;
            }
        } else {
            $logged_in = true;
        }

        if (is_numeric($post)) {
            $post_id = absint($post);
        } else {
            $post_id = url_to_postid($post);
        }

        if (!$post_id) {
            return new IXR_Error(404, __('Invalid post ID.'));
        }

        if (!get_post($post_id)) {
            return new IXR_Error(404, __('Invalid post ID.'));
        }

        if (!comments_open($post_id)) {
            return new IXR_Error(403, __('Sorry, comments are closed for this item.'));
        }

        if (empty($content_struct['content'])) {
            return new IXR_Error(403, __('Comment is required.'));
        }

        $comment = array(
            'comment_post_ID' => $post_id,
            'comment_content' => $content_struct['content'],
        );

        if ($logged_in) {
            $display_name = $user->display_name;
            $user_email = $user->user_email;
            $user_url = $user->user_url;

            $comment['comment_author'] = $this->escape($display_name);
            $comment['comment_author_email'] = $this->escape($user_email);
            $comment['comment_author_url'] = $this->escape($user_url);
            $comment['user_ID'] = $user->ID;
        } else {
            $comment['comment_author'] = '';
            if (isset($content_struct['author'])) {
                $comment['comment_author'] = $content_struct['author'];
            }

            $comment['comment_author_email'] = '';
            if (isset($content_struct['author_email'])) {
                $comment['comment_author_email'] = $content_struct['author_email'];
            }

            $comment['comment_author_url'] = '';
            if (isset($content_struct['author_url'])) {
                $comment['comment_author_url'] = $content_struct['author_url'];
            }

            $comment['user_ID'] = 0;

            if (get_option('require_name_email')) {
                if (6 > strlen($comment['comment_author_email']) || '' == $comment['comment_author']) {
                    return new IXR_Error(403, __('Comment author name and email are required.'));
                } elseif (!is_email($comment['comment_author_email'])) {
                    return new IXR_Error(403, __('A valid email address is required.'));
                }
            }
        }

        $comment['comment_parent'] = isset($content_struct['comment_parent']) ? absint($content_struct['comment_parent']) : 0;

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.newComment');

        $comment_ID = wp_new_comment($comment, true);
        if (is_wp_error($comment_ID)) {
            return new IXR_Error(403, $comment_ID->get_error_message());
        }

        if (!$comment_ID) {
            return new IXR_Error(403, __('Something went wrong.'));
        }

        /**
         * Fires after a new comment has been successfully created via XML-RPC.
         *
         * @param int $comment_ID ID of the new comment.
         * @param array $args An array of new comment arguments.
         * @since 3.4.0
         *
         */
        do_action('xmlrpc_call_success_wp_newComment', $comment_ID, $args); // phpcs:ignore WordPress.NamingConventions.ValidHookName.NotLowercase

        return $comment_ID;
    }

    /**
     * Retrieve all of the comment status.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * }
     * @return array|IXR_Error
     * @since 2.7.0
     *
     */
    public function wp_getCommentStatusList($args)
    {
        $this->escape($args);

        $username = $args[1];
        $password = $args[2];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        if (!current_user_can('publish_posts')) {
            return new IXR_Error(403, __('Sorry, you are not allowed to access details about this site.'));
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.getCommentStatusList');

        return get_comment_statuses();
    }

    /**
     * Retrieve comment count.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * @type int $post_id
     * }
     * @return array|IXR_Error
     * @since 2.5.0
     *
     */
    public function wp_getCommentCount($args)
    {
        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        $post_id = (int)$args[3];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        $post = get_post($post_id, ARRAY_A);
        if (empty($post['ID'])) {
            return new IXR_Error(404, __('Invalid post ID.'));
        }

        if (!current_user_can('edit_post', $post_id)) {
            return new IXR_Error(403, __('Sorry, you are not allowed to access details of this post.'));
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.getCommentCount');

        $count = wp_count_comments($post_id);

        return array(
            'approved' => $count->approved,
            'awaiting_moderation' => $count->moderated,
            'spam' => $count->spam,
            'total_comments' => $count->total_comments,
        );
    }

    /**
     * Retrieve post statuses.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * }
     * @return array|IXR_Error
     * @since 2.5.0
     *
     */
    public function wp_getPostStatusList($args)
    {
        $this->escape($args);

        $username = $args[1];
        $password = $args[2];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        if (!current_user_can('edit_posts')) {
            return new IXR_Error(403, __('Sorry, you are not allowed to access details about this site.'));
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.getPostStatusList');

        return get_post_statuses();
    }

    /**
     * Retrieve page statuses.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * }
     * @return array|IXR_Error
     * @since 2.5.0
     *
     */
    public function wp_getPageStatusList($args)
    {
        $this->escape($args);

        $username = $args[1];
        $password = $args[2];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        if (!current_user_can('edit_pages')) {
            return new IXR_Error(403, __('Sorry, you are not allowed to access details about this site.'));
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.getPageStatusList');

        return get_page_statuses();
    }

    /**
     * Retrieve page templates.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * }
     * @return array|IXR_Error
     * @since 2.6.0
     *
     */
    public function wp_getPageTemplates($args)
    {
        $this->escape($args);

        $username = $args[1];
        $password = $args[2];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        if (!current_user_can('edit_pages')) {
            return new IXR_Error(403, __('Sorry, you are not allowed to access details about this site.'));
        }

        $templates = get_page_templates();
        $templates['Default'] = 'default';

        return $templates;
    }

    /**
     * Retrieve blog options.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * @type array $options
     * }
     * @return array|IXR_Error
     * @since 2.6.0
     *
     */
    public function wp_getOptions($args)
    {
        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        $options = isset($args[3]) ? (array)$args[3] : array();

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        // If no specific options where asked for, return all of them.
        if (count($options) == 0) {
            $options = array_keys($this->blog_options);
        }

        return $this->_getOptions($options);
    }

    /**
     * Retrieve blog options value from list.
     *
     * @param array $options Options to retrieve.
     * @return array
     * @since 2.6.0
     *
     */
    public function _getOptions($options)
    {
        $data = array();
        $can_manage = current_user_can('manage_options');
        foreach ($options as $option) {
            if (array_key_exists($option, $this->blog_options)) {
                $data[$option] = $this->blog_options[$option];
                // Is the value static or dynamic?
                if (isset($data[$option]['option'])) {
                    $data[$option]['value'] = get_option($data[$option]['option']);
                    unset($data[$option]['option']);
                }

                if (!$can_manage) {
                    $data[$option]['readonly'] = true;
                }
            }
        }

        return $data;
    }

    /**
     * Update blog options.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * @type array $options
     * }
     * @return array|IXR_Error
     * @since 2.6.0
     *
     */
    public function wp_setOptions($args)
    {
        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        $options = (array)$args[3];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        if (!current_user_can('manage_options')) {
            return new IXR_Error(403, __('Sorry, you are not allowed to update options.'));
        }

        $option_names = array();
        foreach ($options as $o_name => $o_value) {
            $option_names[] = $o_name;
            if (!array_key_exists($o_name, $this->blog_options)) {
                continue;
            }

            if (true == $this->blog_options[$o_name]['readonly']) {
                continue;
            }

            update_option($this->blog_options[$o_name]['option'], wp_unslash($o_value));
        }

        // Now return the updated values.
        return $this->_getOptions($option_names);
    }

    /**
     * Retrieve a media item by ID
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * @type int $attachment_id
     * }
     * @return array|IXR_Error Associative array contains:
     *  - 'date_created_gmt'
     *  - 'parent'
     *  - 'link'
     *  - 'thumbnail'
     *  - 'title'
     *  - 'caption'
     *  - 'description'
     *  - 'metadata'
     * @since 3.1.0
     *
     */
    public function wp_getMediaItem($args)
    {
        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        $attachment_id = (int)$args[3];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        if (!current_user_can('upload_files')) {
            return new IXR_Error(403, __('Sorry, you are not allowed to upload files.'));
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.getMediaItem');

        $attachment = get_post($attachment_id);
        if (!$attachment) {
            return new IXR_Error(404, __('Invalid attachment ID.'));
        }

        return $this->_prepare_media_item($attachment);
    }

    /**
     * Retrieves a collection of media library items (or attachments)
     *
     * Besides the common blog_id (unused), username, and password arguments, it takes a filter
     * array as last argument.
     *
     * Accepted 'filter' keys are 'parent_id', 'mime_type', 'offset', and 'number'.
     *
     * The defaults are as follows:
     * - 'number' - Default is 5. Total number of media items to retrieve.
     * - 'offset' - Default is 0. See WP_Query::query() for more.
     * - 'parent_id' - Default is ''. The post where the media item is attached. Empty string shows all media items. 0 shows unattached media items.
     * - 'mime_type' - Default is ''. Filter by mime type (e.g., 'image/jpeg', 'application/pdf')
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * @type array $struct
     * }
     * @return array|IXR_Error Contains a collection of media items. See wp_xmlrpc_server::wp_getMediaItem() for a description of each item contents
     * @since 3.1.0
     *
     */
    public function wp_getMediaLibrary($args)
    {
        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        $struct = isset($args[3]) ? $args[3] : array();

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        if (!current_user_can('upload_files')) {
            return new IXR_Error(401, __('Sorry, you are not allowed to upload files.'));
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.getMediaLibrary');

        $parent_id = (isset($struct['parent_id'])) ? absint($struct['parent_id']) : '';
        $mime_type = (isset($struct['mime_type'])) ? $struct['mime_type'] : '';
        $offset = (isset($struct['offset'])) ? absint($struct['offset']) : 0;
        $number = (isset($struct['number'])) ? absint($struct['number']) : -1;

        $attachments = get_posts(
            array(
                'post_type' => 'attachment',
                'post_parent' => $parent_id,
                'offset' => $offset,
                'numberposts' => $number,
                'post_mime_type' => $mime_type,
            )
        );

        $attachments_struct = array();

        foreach ($attachments as $attachment) {
            $attachments_struct[] = $this->_prepare_media_item($attachment);
        }

        return $attachments_struct;
    }

    /**
     * Retrieves a list of post formats used by the site.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * }
     * @return array|IXR_Error List of post formats, otherwise IXR_Error object.
     * @since 3.1.0
     *
     */
    public function wp_getPostFormats($args)
    {
        $this->escape($args);

        $username = $args[1];
        $password = $args[2];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        if (!current_user_can('edit_posts')) {
            return new IXR_Error(403, __('Sorry, you are not allowed to access details about this site.'));
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.getPostFormats');

        $formats = get_post_format_strings();

        // Find out if they want a list of currently supports formats.
        if (isset($args[3]) && is_array($args[3])) {
            if ($args[3]['show-supported']) {
                if (current_theme_supports('post-formats')) {
                    $supported = get_theme_support('post-formats');

                    $data = array();
                    $data['all'] = $formats;
                    $data['supported'] = $supported[0];

                    $formats = $data;
                }
            }
        }

        return $formats;
    }

    /**
     * Retrieves a post type
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * @type string $post_type_name
     * @type array $fields (optional)
     * }
     * @return array|IXR_Error Array contains:
     *  - 'labels'
     *  - 'description'
     *  - 'capability_type'
     *  - 'cap'
     *  - 'map_meta_cap'
     *  - 'hierarchical'
     *  - 'menu_position'
     *  - 'taxonomies'
     *  - 'supports'
     * @since 3.4.0
     *
     * @see get_post_type_object()
     *
     */
    public function wp_getPostType($args)
    {
        if (!$this->minimum_args($args, 4)) {
            return $this->error;
        }

        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        $post_type_name = $args[3];

        if (isset($args[4])) {
            $fields = $args[4];
        } else {
            /**
             * Filters the default query fields used by the given XML-RPC method.
             *
             * @param array $fields An array of post type query fields for the given method.
             * @param string $method The method name.
             * @since 3.4.0
             *
             */
            $fields = apply_filters('xmlrpc_default_posttype_fields', array('labels', 'cap', 'taxonomies'), 'wp.getPostType');
        }

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.getPostType');

        if (!post_type_exists($post_type_name)) {
            return new IXR_Error(403, __('Invalid post type.'));
        }

        $post_type = get_post_type_object($post_type_name);

        if (!current_user_can($post_type->cap->edit_posts)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to edit posts in this post type.'));
        }

        return $this->_prepare_post_type($post_type, $fields);
    }

    /**
     * Retrieves a post types
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * @type array $filter (optional)
     * @type array $fields (optional)
     * }
     * @return array|IXR_Error
     * @since 3.4.0
     *
     * @see get_post_types()
     *
     */
    public function wp_getPostTypes($args)
    {
        if (!$this->minimum_args($args, 3)) {
            return $this->error;
        }

        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        $filter = isset($args[3]) ? $args[3] : array('public' => true);

        if (isset($args[4])) {
            $fields = $args[4];
        } else {
            /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
            $fields = apply_filters('xmlrpc_default_posttype_fields', array('labels', 'cap', 'taxonomies'), 'wp.getPostTypes');
        }

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.getPostTypes');

        $post_types = get_post_types($filter, 'objects');

        $struct = array();

        foreach ($post_types as $post_type) {
            if (!current_user_can($post_type->cap->edit_posts)) {
                continue;
            }

            $struct[$post_type->name] = $this->_prepare_post_type($post_type, $fields);
        }

        return $struct;
    }

    /**
     * Retrieve revisions for a specific post.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * @type int $post_id
     * @type array $fields (optional)
     * }
     * @return array|IXR_Error contains a collection of posts.
     * @see  wp_getPost() for more on $fields
     *
     * @since 3.5.0
     *
     * The optional $fields parameter specifies what fields will be included
     * in the response array.
     *
     * @uses wp_get_post_revisions()
     */
    public function wp_getRevisions($args)
    {
        if (!$this->minimum_args($args, 4)) {
            return $this->error;
        }

        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        $post_id = (int)$args[3];

        if (isset($args[4])) {
            $fields = $args[4];
        } else {
            /**
             * Filters the default revision query fields used by the given XML-RPC method.
             *
             * @param array $field An array of revision query fields.
             * @param string $method The method name.
             * @since 3.5.0
             *
             */
            $fields = apply_filters('xmlrpc_default_revision_fields', array('post_date', 'post_date_gmt'), 'wp.getRevisions');
        }

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.getRevisions');

        $post = get_post($post_id);
        if (!$post) {
            return new IXR_Error(404, __('Invalid post ID.'));
        }

        if (!current_user_can('edit_post', $post_id)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to edit posts.'));
        }

        // Check if revisions are enabled.
        if (!wp_revisions_enabled($post)) {
            return new IXR_Error(401, __('Sorry, revisions are disabled.'));
        }

        $revisions = wp_get_post_revisions($post_id);

        if (!$revisions) {
            return array();
        }

        $struct = array();

        foreach ($revisions as $revision) {
            if (!current_user_can('read_post', $revision->ID)) {
                continue;
            }

            // Skip autosaves.
            if (wp_is_post_autosave($revision)) {
                continue;
            }

            $struct[] = $this->_prepare_post(get_object_vars($revision), $fields);
        }

        return $struct;
    }

    /**
     * Restore a post revision
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * @type int $revision_id
     * }
     * @return bool|IXR_Error false if there was an error restoring, true if success.
     * @since 3.5.0
     *
     * @uses wp_restore_post_revision()
     *
     */
    public function wp_restoreRevision($args)
    {
        if (!$this->minimum_args($args, 3)) {
            return $this->error;
        }

        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        $revision_id = (int)$args[3];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'wp.restoreRevision');

        $revision = wp_get_post_revision($revision_id);
        if (!$revision) {
            return new IXR_Error(404, __('Invalid post ID.'));
        }

        if (wp_is_post_autosave($revision)) {
            return new IXR_Error(404, __('Invalid post ID.'));
        }

        $post = get_post($revision->post_parent);
        if (!$post) {
            return new IXR_Error(404, __('Invalid post ID.'));
        }

        if (!current_user_can('edit_post', $revision->post_parent)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to edit this post.'));
        }

        // Check if revisions are disabled.
        if (!wp_revisions_enabled($post)) {
            return new IXR_Error(401, __('Sorry, revisions are disabled.'));
        }

        $post = wp_restore_post_revision($revision_id);

        return (bool)$post;
    }

    /*
	 * Blogger API functions.
	 * Specs on http://plant.blogger.com/api and https://groups.yahoo.com/group/bloggerDev/
	 */

    /**
     * Retrieve blogs that user owns.
     *
     * Will make more sense once we support multiple blogs.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * }
     * @return array|IXR_Error
     * @since 1.5.0
     *
     */
    public function blogger_getUsersBlogs($args)
    {
        if (!$this->minimum_args($args, 3)) {
            return $this->error;
        }

        if (is_multisite()) {
            return $this->_multisite_getUsersBlogs($args);
        }

        $this->escape($args);

        $username = $args[1];
        $password = $args[2];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'blogger.getUsersBlogs');

        $is_admin = current_user_can('manage_options');

        $struct = array(
            'isAdmin' => $is_admin,
            'url' => get_option('home') . '/',
            'blogid' => '1',
            'blogName' => get_option('blogname'),
            'xmlrpc' => site_url('xmlrpc.php', 'rpc'),
        );

        return array($struct);
    }

    /**
     * Private function for retrieving a users blogs for multisite setups
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type string $username Username.
     * @type string $password Password.
     * }
     * @return array|IXR_Error
     * @since 3.0.0
     *
     */
    protected function _multisite_getUsersBlogs($args)
    {
        $current_blog = get_site();

        $domain = $current_blog->domain;
        $path = $current_blog->path . 'xmlrpc.php';

        $rpc = new IXR_Client(set_url_scheme("http://{$domain}{$path}"));
        $rpc->query('wp.getUsersBlogs', $args[1], $args[2]);
        $blogs = $rpc->getResponse();

        if (isset($blogs['faultCode'])) {
            return new IXR_Error($blogs['faultCode'], $blogs['faultString']);
        }

        if ($_SERVER['HTTP_HOST'] == $domain && $_SERVER['REQUEST_URI'] == $path) {
            return $blogs;
        } else {
            foreach ((array)$blogs as $blog) {
                if (strpos($blog['url'], $_SERVER['HTTP_HOST'])) {
                    return array($blog);
                }
            }
            return array();
        }
    }

    /**
     * Retrieve user's data.
     *
     * Gives your client some info about you, so you don't have to.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * }
     * @return array|IXR_Error
     * @since 1.5.0
     *
     */
    public function blogger_getUserInfo($args)
    {
        $this->escape($args);

        $username = $args[1];
        $password = $args[2];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        if (!current_user_can('edit_posts')) {
            return new IXR_Error(401, __('Sorry, you are not allowed to access user data on this site.'));
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'blogger.getUserInfo');

        $struct = array(
            'nickname' => $user->nickname,
            'userid' => $user->ID,
            'url' => $user->user_url,
            'lastname' => $user->last_name,
            'firstname' => $user->first_name,
        );

        return $struct;
    }

    /**
     * Retrieve post.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type int $post_ID
     * @type string $username
     * @type string $password
     * }
     * @return array|IXR_Error
     * @since 1.5.0
     *
     */
    public function blogger_getPost($args)
    {
        $this->escape($args);

        $post_ID = (int)$args[1];
        $username = $args[2];
        $password = $args[3];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        $post_data = get_post($post_ID, ARRAY_A);
        if (!$post_data) {
            return new IXR_Error(404, __('Invalid post ID.'));
        }

        if (!current_user_can('edit_post', $post_ID)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to edit this post.'));
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'blogger.getPost');

        $categories = implode(',', wp_get_post_categories($post_ID));

        $content = '<title>' . wp_unslash($post_data['post_title']) . '</title>';
        $content .= '<category>' . $categories . '</category>';
        $content .= wp_unslash($post_data['post_content']);

        $struct = array(
            'userid' => $post_data['post_author'],
            'dateCreated' => $this->_convert_date($post_data['post_date']),
            'content' => $content,
            'postid' => (string)$post_data['ID'],
        );

        return $struct;
    }

    /**
     * Retrieve list of recent posts.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type string $appkey (unused)
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * @type int $numberposts (optional)
     * }
     * @return array|IXR_Error
     * @since 1.5.0
     *
     */
    public function blogger_getRecentPosts($args)
    {

        $this->escape($args);

        // $args[0] = appkey - ignored.
        $username = $args[2];
        $password = $args[3];
        if (isset($args[4])) {
            $query = array('numberposts' => absint($args[4]));
        } else {
            $query = array();
        }

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        if (!current_user_can('edit_posts')) {
            return new IXR_Error(401, __('Sorry, you are not allowed to edit posts.'));
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'blogger.getRecentPosts');

        $posts_list = wp_get_recent_posts($query);

        if (!$posts_list) {
            $this->error = new IXR_Error(500, __('Either there are no posts, or something went wrong.'));
            return $this->error;
        }

        $recent_posts = array();
        foreach ($posts_list as $entry) {
            if (!current_user_can('edit_post', $entry['ID'])) {
                continue;
            }

            $post_date = $this->_convert_date($entry['post_date']);
            $categories = implode(',', wp_get_post_categories($entry['ID']));

            $content = '<title>' . wp_unslash($entry['post_title']) . '</title>';
            $content .= '<category>' . $categories . '</category>';
            $content .= wp_unslash($entry['post_content']);

            $recent_posts[] = array(
                'userid' => $entry['post_author'],
                'dateCreated' => $post_date,
                'content' => $content,
                'postid' => (string)$entry['ID'],
            );
        }

        return $recent_posts;
    }

    /**
     * Deprecated.
     *
     * @param array $args Unused.
     * @return IXR_Error Error object.
     * @since 1.5.0
     * @deprecated 3.5.0
     *
     */
    public function blogger_getTemplate($args)
    {
        return new IXR_Error(403, __('Sorry, this method is not supported.'));
    }

    /**
     * Deprecated.
     *
     * @param array $args Unused.
     * @return IXR_Error Error object.
     * @since 1.5.0
     * @deprecated 3.5.0
     *
     */
    public function blogger_setTemplate($args)
    {
        return new IXR_Error(403, __('Sorry, this method is not supported.'));
    }

    /**
     * Creates new post.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type string $appkey (unused)
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * @type string $content
     * @type string $publish
     * }
     * @return int|IXR_Error
     * @since 1.5.0
     *
     */
    public function blogger_newPost($args)
    {
        $this->escape($args);

        $username = $args[2];
        $password = $args[3];
        $content = $args[4];
        $publish = $args[5];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'blogger.newPost');

        $cap = ($publish) ? 'publish_posts' : 'edit_posts';
        if (!current_user_can(get_post_type_object('post')->cap->create_posts) || !current_user_can($cap)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to post on this site.'));
        }

        $post_status = ($publish) ? 'publish' : 'draft';

        $post_author = $user->ID;

        $post_title = xmlrpc_getposttitle($content);
        $post_category = xmlrpc_getpostcategory($content);
        $post_content = xmlrpc_removepostdata($content);

        $post_date = current_time('mysql');
        $post_date_gmt = current_time('mysql', 1);

        $post_data = compact('post_author', 'post_date', 'post_date_gmt', 'post_content', 'post_title', 'post_category', 'post_status');

        $post_ID = wp_insert_post($post_data);
        if (is_wp_error($post_ID)) {
            return new IXR_Error(500, $post_ID->get_error_message());
        }

        if (!$post_ID) {
            return new IXR_Error(500, __('Sorry, the post could not be created.'));
        }

        $this->attach_uploads($post_ID, $post_content);

        /**
         * Fires after a new post has been successfully created via the XML-RPC Blogger API.
         *
         * @param int $post_ID ID of the new post.
         * @param array $args An array of new post arguments.
         * @since 3.4.0
         *
         */
        do_action('xmlrpc_call_success_blogger_newPost', $post_ID, $args); // phpcs:ignore WordPress.NamingConventions.ValidHookName.NotLowercase

        return $post_ID;
    }

    /**
     * Edit a post.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type int $post_ID
     * @type string $username
     * @type string $password
     * @type string $content
     * @type bool $publish
     * }
     * @return true|IXR_Error true when done.
     * @since 1.5.0
     *
     */
    public function blogger_editPost($args)
    {

        $this->escape($args);

        $post_ID = (int)$args[1];
        $username = $args[2];
        $password = $args[3];
        $content = $args[4];
        $publish = $args[5];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'blogger.editPost');

        $actual_post = get_post($post_ID, ARRAY_A);

        if (!$actual_post || 'post' !== $actual_post['post_type']) {
            return new IXR_Error(404, __('Sorry, no such post.'));
        }

        $this->escape($actual_post);

        if (!current_user_can('edit_post', $post_ID)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to edit this post.'));
        }
        if ('publish' === $actual_post['post_status'] && !current_user_can('publish_posts')) {
            return new IXR_Error(401, __('Sorry, you are not allowed to publish this post.'));
        }

        $postdata = array();
        $postdata['ID'] = $actual_post['ID'];
        $postdata['post_content'] = xmlrpc_removepostdata($content);
        $postdata['post_title'] = xmlrpc_getposttitle($content);
        $postdata['post_category'] = xmlrpc_getpostcategory($content);
        $postdata['post_status'] = $actual_post['post_status'];
        $postdata['post_excerpt'] = $actual_post['post_excerpt'];
        $postdata['post_status'] = $publish ? 'publish' : 'draft';

        $result = wp_update_post($postdata);

        if (!$result) {
            return new IXR_Error(500, __('Sorry, the post could not be updated.'));
        }
        $this->attach_uploads($actual_post['ID'], $postdata['post_content']);

        /**
         * Fires after a post has been successfully updated via the XML-RPC Blogger API.
         *
         * @param int $post_ID ID of the updated post.
         * @param array $args An array of arguments for the post to edit.
         * @since 3.4.0
         *
         */
        do_action('xmlrpc_call_success_blogger_editPost', $post_ID, $args); // phpcs:ignore WordPress.NamingConventions.ValidHookName.NotLowercase

        return true;
    }

    /**
     * Remove a post.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type int $post_ID
     * @type string $username
     * @type string $password
     * }
     * @return true|IXR_Error True when post is deleted.
     * @since 1.5.0
     *
     */
    public function blogger_deletePost($args)
    {
        $this->escape($args);

        $post_ID = (int)$args[1];
        $username = $args[2];
        $password = $args[3];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'blogger.deletePost');

        $actual_post = get_post($post_ID, ARRAY_A);

        if (!$actual_post || 'post' !== $actual_post['post_type']) {
            return new IXR_Error(404, __('Sorry, no such post.'));
        }

        if (!current_user_can('delete_post', $post_ID)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to delete this post.'));
        }

        $result = wp_delete_post($post_ID);

        if (!$result) {
            return new IXR_Error(500, __('Sorry, the post could not be deleted.'));
        }

        /**
         * Fires after a post has been successfully deleted via the XML-RPC Blogger API.
         *
         * @param int $post_ID ID of the deleted post.
         * @param array $args An array of arguments to delete the post.
         * @since 3.4.0
         *
         */
        do_action('xmlrpc_call_success_blogger_deletePost', $post_ID, $args); // phpcs:ignore WordPress.NamingConventions.ValidHookName.NotLowercase

        return true;
    }

    /*
	 * MetaWeblog API functions.
	 * Specs on wherever Dave Winer wants them to be.
	 */

    /**
     * Create a new post.
     *
     * The 'content_struct' argument must contain:
     *  - title
     *  - description
     *  - mt_excerpt
     *  - mt_text_more
     *  - mt_keywords
     *  - mt_tb_ping_urls
     *  - categories
     *
     * Also, it can optionally contain:
     *  - wp_slug
     *  - wp_password
     *  - wp_page_parent_id
     *  - wp_page_order
     *  - wp_author_id
     *  - post_status | page_status - can be 'draft', 'private', 'publish', or 'pending'
     *  - mt_allow_comments - can be 'open' or 'closed'
     *  - mt_allow_pings - can be 'open' or 'closed'
     *  - date_created_gmt
     *  - dateCreated
     *  - wp_post_thumbnail
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * @type array $content_struct
     * @type int $publish
     * }
     * @return int|IXR_Error
     * @since 1.5.0
     *
     */
    public function mw_newPost($args)
    {
        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        $content_struct = $args[3];
        $publish = isset($args[4]) ? $args[4] : 0;

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'metaWeblog.newPost');

        $page_template = '';
        if (!empty($content_struct['post_type'])) {
            if ('page' === $content_struct['post_type']) {
                if ($publish) {
                    $cap = 'publish_pages';
                } elseif (isset($content_struct['page_status']) && 'publish' === $content_struct['page_status']) {
                    $cap = 'publish_pages';
                } else {
                    $cap = 'edit_pages';
                }
                $error_message = __('Sorry, you are not allowed to publish pages on this site.');
                $post_type = 'page';
                if (!empty($content_struct['wp_page_template'])) {
                    $page_template = $content_struct['wp_page_template'];
                }
            } elseif ('post' === $content_struct['post_type']) {
                if ($publish) {
                    $cap = 'publish_posts';
                } elseif (isset($content_struct['post_status']) && 'publish' === $content_struct['post_status']) {
                    $cap = 'publish_posts';
                } else {
                    $cap = 'edit_posts';
                }
                $error_message = __('Sorry, you are not allowed to publish posts on this site.');
                $post_type = 'post';
            } else {
                // No other 'post_type' values are allowed here.
                return new IXR_Error(401, __('Invalid post type.'));
            }
        } else {
            if ($publish) {
                $cap = 'publish_posts';
            } elseif (isset($content_struct['post_status']) && 'publish' === $content_struct['post_status']) {
                $cap = 'publish_posts';
            } else {
                $cap = 'edit_posts';
            }
            $error_message = __('Sorry, you are not allowed to publish posts on this site.');
            $post_type = 'post';
        }

        if (!current_user_can(get_post_type_object($post_type)->cap->create_posts)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to publish posts on this site.'));
        }
        if (!current_user_can($cap)) {
            return new IXR_Error(401, $error_message);
        }

        // Check for a valid post format if one was given.
        if (isset($content_struct['wp_post_format'])) {
            $content_struct['wp_post_format'] = sanitize_key($content_struct['wp_post_format']);
            if (!array_key_exists($content_struct['wp_post_format'], get_post_format_strings())) {
                return new IXR_Error(404, __('Invalid post format.'));
            }
        }

        // Let WordPress generate the 'post_name' (slug) unless
        // one has been provided.
        $post_name = '';
        if (isset($content_struct['wp_slug'])) {
            $post_name = $content_struct['wp_slug'];
        }

        // Only use a password if one was given.
        if (isset($content_struct['wp_password'])) {
            $post_password = $content_struct['wp_password'];
        } else {
            $post_password = '';
        }

        // Only set a post parent if one was given.
        if (isset($content_struct['wp_page_parent_id'])) {
            $post_parent = $content_struct['wp_page_parent_id'];
        } else {
            $post_parent = 0;
        }

        // Only set the 'menu_order' if it was given.
        if (isset($content_struct['wp_page_order'])) {
            $menu_order = $content_struct['wp_page_order'];
        } else {
            $menu_order = 0;
        }

        $post_author = $user->ID;

        // If an author id was provided then use it instead.
        if (isset($content_struct['wp_author_id']) && ($user->ID != $content_struct['wp_author_id'])) {
            switch ($post_type) {
                case 'post':
                    if (!current_user_can('edit_others_posts')) {
                        return new IXR_Error(401, __('Sorry, you are not allowed to create posts as this user.'));
                    }
                    break;
                case 'page':
                    if (!current_user_can('edit_others_pages')) {
                        return new IXR_Error(401, __('Sorry, you are not allowed to create pages as this user.'));
                    }
                    break;
                default:
                    return new IXR_Error(401, __('Invalid post type.'));
            }
            $author = get_userdata($content_struct['wp_author_id']);
            if (!$author) {
                return new IXR_Error(404, __('Invalid author ID.'));
            }
            $post_author = $content_struct['wp_author_id'];
        }

        $post_title = isset($content_struct['title']) ? $content_struct['title'] : null;
        $post_content = isset($content_struct['description']) ? $content_struct['description'] : null;

        $post_status = $publish ? 'publish' : 'draft';

        if (isset($content_struct["{$post_type}_status"])) {
            switch ($content_struct["{$post_type}_status"]) {
                case 'draft':
                case 'pending':
                case 'private':
                case 'publish':
                    $post_status = $content_struct["{$post_type}_status"];
                    break;
                default:
                    $post_status = $publish ? 'publish' : 'draft';
                    break;
            }
        }

        $post_excerpt = isset($content_struct['mt_excerpt']) ? $content_struct['mt_excerpt'] : null;
        $post_more = isset($content_struct['mt_text_more']) ? $content_struct['mt_text_more'] : null;

        $tags_input = isset($content_struct['mt_keywords']) ? $content_struct['mt_keywords'] : null;

        if (isset($content_struct['mt_allow_comments'])) {
            if (!is_numeric($content_struct['mt_allow_comments'])) {
                switch ($content_struct['mt_allow_comments']) {
                    case 'closed':
                        $comment_status = 'closed';
                        break;
                    case 'open':
                        $comment_status = 'open';
                        break;
                    default:
                        $comment_status = get_default_comment_status($post_type);
                        break;
                }
            } else {
                switch ((int)$content_struct['mt_allow_comments']) {
                    case 0:
                    case 2:
                        $comment_status = 'closed';
                        break;
                    case 1:
                        $comment_status = 'open';
                        break;
                    default:
                        $comment_status = get_default_comment_status($post_type);
                        break;
                }
            }
        } else {
            $comment_status = get_default_comment_status($post_type);
        }

        if (isset($content_struct['mt_allow_pings'])) {
            if (!is_numeric($content_struct['mt_allow_pings'])) {
                switch ($content_struct['mt_allow_pings']) {
                    case 'closed':
                        $ping_status = 'closed';
                        break;
                    case 'open':
                        $ping_status = 'open';
                        break;
                    default:
                        $ping_status = get_default_comment_status($post_type, 'pingback');
                        break;
                }
            } else {
                switch ((int)$content_struct['mt_allow_pings']) {
                    case 0:
                        $ping_status = 'closed';
                        break;
                    case 1:
                        $ping_status = 'open';
                        break;
                    default:
                        $ping_status = get_default_comment_status($post_type, 'pingback');
                        break;
                }
            }
        } else {
            $ping_status = get_default_comment_status($post_type, 'pingback');
        }

        if ($post_more) {
            $post_content = $post_content . '<!--more-->' . $post_more;
        }

        $to_ping = null;
        if (isset($content_struct['mt_tb_ping_urls'])) {
            $to_ping = $content_struct['mt_tb_ping_urls'];
            if (is_array($to_ping)) {
                $to_ping = implode(' ', $to_ping);
            }
        }

        // Do some timestamp voodoo.
        if (!empty($content_struct['date_created_gmt'])) {
            // We know this is supposed to be GMT, so we're going to slap that Z on there by force.
            $dateCreated = rtrim($content_struct['date_created_gmt']->getIso(), 'Z') . 'Z';
        } elseif (!empty($content_struct['dateCreated'])) {
            $dateCreated = $content_struct['dateCreated']->getIso();
        }

        if (!empty($dateCreated)) {
            $post_date = iso8601_to_datetime($dateCreated);
            $post_date_gmt = iso8601_to_datetime($dateCreated, 'gmt');
        } else {
            $post_date = '';
            $post_date_gmt = '';
        }

        $post_category = array();
        if (isset($content_struct['categories'])) {
            $catnames = $content_struct['categories'];

            if (is_array($catnames)) {
                foreach ($catnames as $cat) {
                    $post_category[] = get_cat_ID($cat);
                }
            }
        }

        $postdata = compact('post_author', 'post_date', 'post_date_gmt', 'post_content', 'post_title', 'post_category', 'post_status', 'post_excerpt', 'comment_status', 'ping_status', 'to_ping', 'post_type', 'post_name', 'post_password', 'post_parent', 'menu_order', 'tags_input', 'page_template');

        $post_ID = get_default_post_to_edit($post_type, true)->ID;
        $postdata['ID'] = $post_ID;

        // Only posts can be sticky.
        if ('post' === $post_type && isset($content_struct['sticky'])) {
            $data = $postdata;
            $data['sticky'] = $content_struct['sticky'];
            $error = $this->_toggle_sticky($data);
            if ($error) {
                return $error;
            }
        }

        if (isset($content_struct['custom_fields'])) {
            $this->set_custom_fields($post_ID, $content_struct['custom_fields']);
        }

        if (isset($content_struct['wp_post_thumbnail'])) {
            if (set_post_thumbnail($post_ID, $content_struct['wp_post_thumbnail']) === false) {
                return new IXR_Error(404, __('Invalid attachment ID.'));
            }

            unset($content_struct['wp_post_thumbnail']);
        }

        // Handle enclosures.
        $thisEnclosure = isset($content_struct['enclosure']) ? $content_struct['enclosure'] : null;
        $this->add_enclosure_if_new($post_ID, $thisEnclosure);

        $this->attach_uploads($post_ID, $post_content);

        // Handle post formats if assigned, value is validated earlier
        // in this function.
        if (isset($content_struct['wp_post_format'])) {
            set_post_format($post_ID, $content_struct['wp_post_format']);
        }

        $post_ID = wp_insert_post($postdata, true);
        if (is_wp_error($post_ID)) {
            return new IXR_Error(500, $post_ID->get_error_message());
        }

        if (!$post_ID) {
            return new IXR_Error(500, __('Sorry, the post could not be created.'));
        }

        /**
         * Fires after a new post has been successfully created via the XML-RPC MovableType API.
         *
         * @param int $post_ID ID of the new post.
         * @param array $args An array of arguments to create the new post.
         * @since 3.4.0
         *
         */
        do_action('xmlrpc_call_success_mw_newPost', $post_ID, $args); // phpcs:ignore WordPress.NamingConventions.ValidHookName.NotLowercase

        return strval($post_ID);
    }

    /**
     * Adds an enclosure to a post if it's new.
     *
     * @param integer $post_ID Post ID.
     * @param array $enclosure Enclosure data.
     * @since 2.8.0
     *
     */
    public function add_enclosure_if_new($post_ID, $enclosure)
    {
        if (is_array($enclosure) && isset($enclosure['url']) && isset($enclosure['length']) && isset($enclosure['type'])) {
            $encstring = $enclosure['url'] . "\n" . $enclosure['length'] . "\n" . $enclosure['type'] . "\n";
            $found = false;
            $enclosures = get_post_meta($post_ID, 'enclosure');
            if ($enclosures) {
                foreach ($enclosures as $enc) {
                    // This method used to omit the trailing new line. #23219
                    if (rtrim($enc, "\n") == rtrim($encstring, "\n")) {
                        $found = true;
                        break;
                    }
                }
            }
            if (!$found) {
                add_post_meta($post_ID, 'enclosure', $encstring);
            }
        }
    }

    /**
     * Attach upload to a post.
     *
     * @param int $post_ID Post ID.
     * @param string $post_content Post Content for attachment.
     * @since 2.1.0
     *
     * @global wpdb $wpdb WordPress database abstraction object.
     *
     */
    public function attach_uploads($post_ID, $post_content)
    {
        global $wpdb;

        // Find any unattached files.
        $attachments = $wpdb->get_results("SELECT ID, guid FROM {$wpdb->posts} WHERE post_parent = '0' AND post_type = 'attachment'");
        if (is_array($attachments)) {
            foreach ($attachments as $file) {
                if (!empty($file->guid) && strpos($post_content, $file->guid) !== false) {
                    $wpdb->update($wpdb->posts, array('post_parent' => $post_ID), array('ID' => $file->ID));
                }
            }
        }
    }

    /**
     * Edit a post.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * @type array $content_struct
     * @type int $publish
     * }
     * @return bool|IXR_Error True on success.
     * @since 1.5.0
     *
     */
    public function mw_editPost($args)
    {
        $this->escape($args);

        $post_ID = (int)$args[0];
        $username = $args[1];
        $password = $args[2];
        $content_struct = $args[3];
        $publish = isset($args[4]) ? $args[4] : 0;

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'metaWeblog.editPost');

        $postdata = get_post($post_ID, ARRAY_A);

        /*
		 * If there is no post data for the give post id, stop now and return an error.
		 * Otherwise a new post will be created (which was the old behavior).
		 */
        if (!$postdata || empty($postdata['ID'])) {
            return new IXR_Error(404, __('Invalid post ID.'));
        }

        if (!current_user_can('edit_post', $post_ID)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to edit this post.'));
        }

        // Use wp.editPost to edit post types other than post and page.
        if (!in_array($postdata['post_type'], array('post', 'page'))) {
            return new IXR_Error(401, __('Invalid post type.'));
        }

        // Thwart attempt to change the post type.
        if (!empty($content_struct['post_type']) && ($content_struct['post_type'] != $postdata['post_type'])) {
            return new IXR_Error(401, __('The post type may not be changed.'));
        }

        // Check for a valid post format if one was given.
        if (isset($content_struct['wp_post_format'])) {
            $content_struct['wp_post_format'] = sanitize_key($content_struct['wp_post_format']);
            if (!array_key_exists($content_struct['wp_post_format'], get_post_format_strings())) {
                return new IXR_Error(404, __('Invalid post format.'));
            }
        }

        $this->escape($postdata);

        $ID = $postdata['ID'];
        $post_content = $postdata['post_content'];
        $post_title = $postdata['post_title'];
        $post_excerpt = $postdata['post_excerpt'];
        $post_password = $postdata['post_password'];
        $post_parent = $postdata['post_parent'];
        $post_type = $postdata['post_type'];
        $menu_order = $postdata['menu_order'];
        $ping_status = $postdata['ping_status'];
        $comment_status = $postdata['comment_status'];

        // Let WordPress manage slug if none was provided.
        $post_name = $postdata['post_name'];
        if (isset($content_struct['wp_slug'])) {
            $post_name = $content_struct['wp_slug'];
        }

        // Only use a password if one was given.
        if (isset($content_struct['wp_password'])) {
            $post_password = $content_struct['wp_password'];
        }

        // Only set a post parent if one was given.
        if (isset($content_struct['wp_page_parent_id'])) {
            $post_parent = $content_struct['wp_page_parent_id'];
        }

        // Only set the 'menu_order' if it was given.
        if (isset($content_struct['wp_page_order'])) {
            $menu_order = $content_struct['wp_page_order'];
        }

        $page_template = null;
        if (!empty($content_struct['wp_page_template']) && 'page' == $post_type) {
            $page_template = $content_struct['wp_page_template'];
        }

        $post_author = $postdata['post_author'];

        // If an author id was provided then use it instead.
        if (isset($content_struct['wp_author_id'])) {
            // Check permissions if attempting to switch author to or from another user.
            if ($user->ID != $content_struct['wp_author_id'] || $user->ID != $post_author) {
                switch ($post_type) {
                    case 'post':
                        if (!current_user_can('edit_others_posts')) {
                            return new IXR_Error(401, __('Sorry, you are not allowed to change the post author as this user.'));
                        }
                        break;
                    case 'page':
                        if (!current_user_can('edit_others_pages')) {
                            return new IXR_Error(401, __('Sorry, you are not allowed to change the page author as this user.'));
                        }
                        break;
                    default:
                        return new IXR_Error(401, __('Invalid post type.'));
                }
                $post_author = $content_struct['wp_author_id'];
            }
        }

        if (isset($content_struct['mt_allow_comments'])) {
            if (!is_numeric($content_struct['mt_allow_comments'])) {
                switch ($content_struct['mt_allow_comments']) {
                    case 'closed':
                        $comment_status = 'closed';
                        break;
                    case 'open':
                        $comment_status = 'open';
                        break;
                    default:
                        $comment_status = get_default_comment_status($post_type);
                        break;
                }
            } else {
                switch ((int)$content_struct['mt_allow_comments']) {
                    case 0:
                    case 2:
                        $comment_status = 'closed';
                        break;
                    case 1:
                        $comment_status = 'open';
                        break;
                    default:
                        $comment_status = get_default_comment_status($post_type);
                        break;
                }
            }
        }

        if (isset($content_struct['mt_allow_pings'])) {
            if (!is_numeric($content_struct['mt_allow_pings'])) {
                switch ($content_struct['mt_allow_pings']) {
                    case 'closed':
                        $ping_status = 'closed';
                        break;
                    case 'open':
                        $ping_status = 'open';
                        break;
                    default:
                        $ping_status = get_default_comment_status($post_type, 'pingback');
                        break;
                }
            } else {
                switch ((int)$content_struct['mt_allow_pings']) {
                    case 0:
                        $ping_status = 'closed';
                        break;
                    case 1:
                        $ping_status = 'open';
                        break;
                    default:
                        $ping_status = get_default_comment_status($post_type, 'pingback');
                        break;
                }
            }
        }

        if (isset($content_struct['title'])) {
            $post_title = $content_struct['title'];
        }

        if (isset($content_struct['description'])) {
            $post_content = $content_struct['description'];
        }

        $post_category = array();
        if (isset($content_struct['categories'])) {
            $catnames = $content_struct['categories'];
            if (is_array($catnames)) {
                foreach ($catnames as $cat) {
                    $post_category[] = get_cat_ID($cat);
                }
            }
        }

        if (isset($content_struct['mt_excerpt'])) {
            $post_excerpt = $content_struct['mt_excerpt'];
        }

        $post_more = isset($content_struct['mt_text_more']) ? $content_struct['mt_text_more'] : null;

        $post_status = $publish ? 'publish' : 'draft';
        if (isset($content_struct["{$post_type}_status"])) {
            switch ($content_struct["{$post_type}_status"]) {
                case 'draft':
                case 'pending':
                case 'private':
                case 'publish':
                    $post_status = $content_struct["{$post_type}_status"];
                    break;
                default:
                    $post_status = $publish ? 'publish' : 'draft';
                    break;
            }
        }

        $tags_input = isset($content_struct['mt_keywords']) ? $content_struct['mt_keywords'] : null;

        if ('publish' === $post_status || 'private' === $post_status) {
            if ('page' == $post_type && !current_user_can('publish_pages')) {
                return new IXR_Error(401, __('Sorry, you are not allowed to publish this page.'));
            } elseif (!current_user_can('publish_posts')) {
                return new IXR_Error(401, __('Sorry, you are not allowed to publish this post.'));
            }
        }

        if ($post_more) {
            $post_content = $post_content . '<!--more-->' . $post_more;
        }

        $to_ping = null;
        if (isset($content_struct['mt_tb_ping_urls'])) {
            $to_ping = $content_struct['mt_tb_ping_urls'];
            if (is_array($to_ping)) {
                $to_ping = implode(' ', $to_ping);
            }
        }

        // Do some timestamp voodoo.
        if (!empty($content_struct['date_created_gmt'])) {
            // We know this is supposed to be GMT, so we're going to slap that Z on there by force.
            $dateCreated = rtrim($content_struct['date_created_gmt']->getIso(), 'Z') . 'Z';
        } elseif (!empty($content_struct['dateCreated'])) {
            $dateCreated = $content_struct['dateCreated']->getIso();
        }

        // Default to not flagging the post date to be edited unless it's intentional.
        $edit_date = false;

        if (!empty($dateCreated)) {
            $post_date = iso8601_to_datetime($dateCreated);
            $post_date_gmt = iso8601_to_datetime($dateCreated, 'gmt');

            // Flag the post date to be edited.
            $edit_date = true;
        } else {
            $post_date = $postdata['post_date'];
            $post_date_gmt = $postdata['post_date_gmt'];
        }

        // We've got all the data -- post it.
        $newpost = compact('ID', 'post_content', 'post_title', 'post_category', 'post_status', 'post_excerpt', 'comment_status', 'ping_status', 'edit_date', 'post_date', 'post_date_gmt', 'to_ping', 'post_name', 'post_password', 'post_parent', 'menu_order', 'post_author', 'tags_input', 'page_template');

        $result = wp_update_post($newpost, true);
        if (is_wp_error($result)) {
            return new IXR_Error(500, $result->get_error_message());
        }

        if (!$result) {
            return new IXR_Error(500, __('Sorry, the post could not be updated.'));
        }

        // Only posts can be sticky.
        if ('post' === $post_type && isset($content_struct['sticky'])) {
            $data = $newpost;
            $data['sticky'] = $content_struct['sticky'];
            $data['post_type'] = 'post';
            $error = $this->_toggle_sticky($data, true);
            if ($error) {
                return $error;
            }
        }

        if (isset($content_struct['custom_fields'])) {
            $this->set_custom_fields($post_ID, $content_struct['custom_fields']);
        }

        if (isset($content_struct['wp_post_thumbnail'])) {

            // Empty value deletes, non-empty value adds/updates.
            if (empty($content_struct['wp_post_thumbnail'])) {
                delete_post_thumbnail($post_ID);
            } else {
                if (set_post_thumbnail($post_ID, $content_struct['wp_post_thumbnail']) === false) {
                    return new IXR_Error(404, __('Invalid attachment ID.'));
                }
            }
            unset($content_struct['wp_post_thumbnail']);
        }

        // Handle enclosures.
        $thisEnclosure = isset($content_struct['enclosure']) ? $content_struct['enclosure'] : null;
        $this->add_enclosure_if_new($post_ID, $thisEnclosure);

        $this->attach_uploads($ID, $post_content);

        // Handle post formats if assigned, validation is handled earlier in this function.
        if (isset($content_struct['wp_post_format'])) {
            set_post_format($post_ID, $content_struct['wp_post_format']);
        }

        /**
         * Fires after a post has been successfully updated via the XML-RPC MovableType API.
         *
         * @param int $post_ID ID of the updated post.
         * @param array $args An array of arguments to update the post.
         * @since 3.4.0
         *
         */
        do_action('xmlrpc_call_success_mw_editPost', $post_ID, $args); // phpcs:ignore WordPress.NamingConventions.ValidHookName.NotLowercase

        return true;
    }

    /**
     * Retrieve post.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type int $post_ID
     * @type string $username
     * @type string $password
     * }
     * @return array|IXR_Error
     * @since 1.5.0
     *
     */
    public function mw_getPost($args)
    {
        $this->escape($args);

        $post_ID = (int)$args[0];
        $username = $args[1];
        $password = $args[2];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        $postdata = get_post($post_ID, ARRAY_A);
        if (!$postdata) {
            return new IXR_Error(404, __('Invalid post ID.'));
        }

        if (!current_user_can('edit_post', $post_ID)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to edit this post.'));
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'metaWeblog.getPost');

        if ('' != $postdata['post_date']) {
            $post_date = $this->_convert_date($postdata['post_date']);
            $post_date_gmt = $this->_convert_date_gmt($postdata['post_date_gmt'], $postdata['post_date']);
            $post_modified = $this->_convert_date($postdata['post_modified']);
            $post_modified_gmt = $this->_convert_date_gmt($postdata['post_modified_gmt'], $postdata['post_modified']);

            $categories = array();
            $catids = wp_get_post_categories($post_ID);
            foreach ($catids as $catid) {
                $categories[] = get_cat_name($catid);
            }

            $tagnames = array();
            $tags = wp_get_post_tags($post_ID);
            if (!empty($tags)) {
                foreach ($tags as $tag) {
                    $tagnames[] = $tag->name;
                }
                $tagnames = implode(', ', $tagnames);
            } else {
                $tagnames = '';
            }

            $post = get_extended($postdata['post_content']);
            $link = get_permalink($postdata['ID']);

            // Get the author info.
            $author = get_userdata($postdata['post_author']);

            $allow_comments = ('open' == $postdata['comment_status']) ? 1 : 0;
            $allow_pings = ('open' == $postdata['ping_status']) ? 1 : 0;

            // Consider future posts as published.
            if ('future' === $postdata['post_status']) {
                $postdata['post_status'] = 'publish';
            }

            // Get post format.
            $post_format = get_post_format($post_ID);
            if (empty($post_format)) {
                $post_format = 'standard';
            }

            $sticky = false;
            if (is_sticky($post_ID)) {
                $sticky = true;
            }

            $enclosure = array();
            foreach ((array)get_post_custom($post_ID) as $key => $val) {
                if ('enclosure' === $key) {
                    foreach ((array)$val as $enc) {
                        $encdata = explode("\n", $enc);
                        $enclosure['url'] = trim(htmlspecialchars($encdata[0]));
                        $enclosure['length'] = (int)trim($encdata[1]);
                        $enclosure['type'] = trim($encdata[2]);
                        break 2;
                    }
                }
            }

            $resp = array(
                'dateCreated' => $post_date,
                'userid' => $postdata['post_author'],
                'postid' => $postdata['ID'],
                'description' => $post['main'],
                'title' => $postdata['post_title'],
                'link' => $link,
                'permaLink' => $link,
                // Commented out because no other tool seems to use this.
                // 'content' => $entry['post_content'],
                'categories' => $categories,
                'mt_excerpt' => $postdata['post_excerpt'],
                'mt_text_more' => $post['extended'],
                'wp_more_text' => $post['more_text'],
                'mt_allow_comments' => $allow_comments,
                'mt_allow_pings' => $allow_pings,
                'mt_keywords' => $tagnames,
                'wp_slug' => $postdata['post_name'],
                'wp_password' => $postdata['post_password'],
                'wp_author_id' => (string)$author->ID,
                'wp_author_display_name' => $author->display_name,
                'date_created_gmt' => $post_date_gmt,
                'post_status' => $postdata['post_status'],
                'custom_fields' => $this->get_custom_fields($post_ID),
                'wp_post_format' => $post_format,
                'sticky' => $sticky,
                'date_modified' => $post_modified,
                'date_modified_gmt' => $post_modified_gmt,
            );

            if (!empty($enclosure)) {
                $resp['enclosure'] = $enclosure;
            }

            $resp['wp_post_thumbnail'] = get_post_thumbnail_id($postdata['ID']);

            return $resp;
        } else {
            return new IXR_Error(404, __('Sorry, no such post.'));
        }
    }

    /**
     * Retrieve list of recent posts.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * @type int $numberposts
     * }
     * @return array|IXR_Error
     * @since 1.5.0
     *
     */
    public function mw_getRecentPosts($args)
    {
        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        if (isset($args[3])) {
            $query = array('numberposts' => absint($args[3]));
        } else {
            $query = array();
        }

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        if (!current_user_can('edit_posts')) {
            return new IXR_Error(401, __('Sorry, you are not allowed to edit posts.'));
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'metaWeblog.getRecentPosts');

        $posts_list = wp_get_recent_posts($query);

        if (!$posts_list) {
            return array();
        }

        $recent_posts = array();
        foreach ($posts_list as $entry) {
            if (!current_user_can('edit_post', $entry['ID'])) {
                continue;
            }

            $post_date = $this->_convert_date($entry['post_date']);
            $post_date_gmt = $this->_convert_date_gmt($entry['post_date_gmt'], $entry['post_date']);
            $post_modified = $this->_convert_date($entry['post_modified']);
            $post_modified_gmt = $this->_convert_date_gmt($entry['post_modified_gmt'], $entry['post_modified']);

            $categories = array();
            $catids = wp_get_post_categories($entry['ID']);
            foreach ($catids as $catid) {
                $categories[] = get_cat_name($catid);
            }

            $tagnames = array();
            $tags = wp_get_post_tags($entry['ID']);
            if (!empty($tags)) {
                foreach ($tags as $tag) {
                    $tagnames[] = $tag->name;
                }
                $tagnames = implode(', ', $tagnames);
            } else {
                $tagnames = '';
            }

            $post = get_extended($entry['post_content']);
            $link = get_permalink($entry['ID']);

            // Get the post author info.
            $author = get_userdata($entry['post_author']);

            $allow_comments = ('open' == $entry['comment_status']) ? 1 : 0;
            $allow_pings = ('open' == $entry['ping_status']) ? 1 : 0;

            // Consider future posts as published.
            if ('future' === $entry['post_status']) {
                $entry['post_status'] = 'publish';
            }

            // Get post format.
            $post_format = get_post_format($entry['ID']);
            if (empty($post_format)) {
                $post_format = 'standard';
            }

            $recent_posts[] = array(
                'dateCreated' => $post_date,
                'userid' => $entry['post_author'],
                'postid' => (string)$entry['ID'],
                'description' => $post['main'],
                'title' => $entry['post_title'],
                'link' => $link,
                'permaLink' => $link,
                // Commented out because no other tool seems to use this.
                // 'content' => $entry['post_content'],
                'categories' => $categories,
                'mt_excerpt' => $entry['post_excerpt'],
                'mt_text_more' => $post['extended'],
                'wp_more_text' => $post['more_text'],
                'mt_allow_comments' => $allow_comments,
                'mt_allow_pings' => $allow_pings,
                'mt_keywords' => $tagnames,
                'wp_slug' => $entry['post_name'],
                'wp_password' => $entry['post_password'],
                'wp_author_id' => (string)$author->ID,
                'wp_author_display_name' => $author->display_name,
                'date_created_gmt' => $post_date_gmt,
                'post_status' => $entry['post_status'],
                'custom_fields' => $this->get_custom_fields($entry['ID']),
                'wp_post_format' => $post_format,
                'date_modified' => $post_modified,
                'date_modified_gmt' => $post_modified_gmt,
                'sticky' => ('post' === $entry['post_type'] && is_sticky($entry['ID'])),
                'wp_post_thumbnail' => get_post_thumbnail_id($entry['ID']),
            );
        }

        return $recent_posts;
    }

    /**
     * Retrieve the list of categories on a given blog.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * }
     * @return array|IXR_Error
     * @since 1.5.0
     *
     */
    public function mw_getCategories($args)
    {
        $this->escape($args);

        $username = $args[1];
        $password = $args[2];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        if (!current_user_can('edit_posts')) {
            return new IXR_Error(401, __('Sorry, you must be able to edit posts on this site in order to view categories.'));
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'metaWeblog.getCategories');

        $categories_struct = array();

        $cats = get_categories(array('get' => 'all'));
        if ($cats) {
            foreach ($cats as $cat) {
                $struct = array();
                $struct['categoryId'] = $cat->term_id;
                $struct['parentId'] = $cat->parent;
                $struct['description'] = $cat->name;
                $struct['categoryDescription'] = $cat->description;
                $struct['categoryName'] = $cat->name;
                $struct['htmlUrl'] = esc_html(get_category_link($cat->term_id));
                $struct['rssUrl'] = esc_html(get_category_feed_link($cat->term_id, 'rss2'));

                $categories_struct[] = $struct;
            }
        }

        return $categories_struct;
    }

    /**
     * Uploads a file, following your settings.
     *
     * Adapted from a patch by Johann Richard.
     *
     * @link http://mycvs.org/archives/2004/06/30/file-upload-to-wordpress-in-ecto/
     *
     * @since 1.5.0
     *
     * @global wpdb $wpdb WordPress database abstraction object.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * @type array $data
     * }
     * @return array|IXR_Error
     */
    public function mw_newMediaObject($args)
    {
        global $wpdb;

        $username = $this->escape($args[1]);
        $password = $this->escape($args[2]);
        $data = $args[3];

        $name = sanitize_file_name($data['name']);
        $type = $data['type'];
        $bits = $data['bits'];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'metaWeblog.newMediaObject');

        if (!current_user_can('upload_files')) {
            $this->error = new IXR_Error(401, __('Sorry, you are not allowed to upload files.'));
            return $this->error;
        }

        if (is_multisite() && upload_is_user_over_quota(false)) {
            $this->error = new IXR_Error(
                401,
                sprintf(
                /* translators: %s: Allowed space allocation. */
                    __('Sorry, you have used your space allocation of %s. Please delete some files to upload more files.'),
                    size_format(get_space_allowed() * MB_IN_BYTES)
                )
            );
            return $this->error;
        }

        /**
         * Filters whether to preempt the XML-RPC media upload.
         *
         * Passing a truthy value will effectively short-circuit the media upload,
         * returning that value as a 500 error instead.
         *
         * @param bool $error Whether to pre-empt the media upload. Default false.
         * @since 2.1.0
         *
         */
        $upload_err = apply_filters('pre_upload_error', false);
        if ($upload_err) {
            return new IXR_Error(500, $upload_err);
        }

        $upload = wp_upload_bits($name, null, $bits);
        if (!empty($upload['error'])) {
            /* translators: 1: File name, 2: Error message. */
            $errorString = sprintf(__('Could not write file %1$s (%2$s).'), $name, $upload['error']);
            return new IXR_Error(500, $errorString);
        }
        // Construct the attachment array.
        $post_id = 0;
        if (!empty($data['post_id'])) {
            $post_id = (int)$data['post_id'];

            if (!current_user_can('edit_post', $post_id)) {
                return new IXR_Error(401, __('Sorry, you are not allowed to edit this post.'));
            }
        }
        $attachment = array(
            'post_title' => $name,
            'post_content' => '',
            'post_type' => 'attachment',
            'post_parent' => $post_id,
            'post_mime_type' => $type,
            'guid' => $upload['url'],
        );

        // Save the data.
        $id = wp_insert_attachment($attachment, $upload['file'], $post_id);
        wp_update_attachment_metadata($id, wp_generate_attachment_metadata($id, $upload['file']));

        /**
         * Fires after a new attachment has been added via the XML-RPC MovableType API.
         *
         * @param int $id ID of the new attachment.
         * @param array $args An array of arguments to add the attachment.
         * @since 3.4.0
         *
         */
        do_action('xmlrpc_call_success_mw_newMediaObject', $id, $args); // phpcs:ignore WordPress.NamingConventions.ValidHookName.NotLowercase

        $struct = $this->_prepare_media_item(get_post($id));

        // Deprecated values.
        $struct['id'] = $struct['attachment_id'];
        $struct['file'] = $struct['title'];
        $struct['url'] = $struct['link'];

        return $struct;
    }

    /*
	 * MovableType API functions.
	 * Specs on http://www.movabletype.org/docs/mtmanual_programmatic.html
	 */

    /**
     * Retrieve the post titles of recent posts.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * @type int $numberposts
     * }
     * @return array|IXR_Error
     * @since 1.5.0
     *
     */
    public function mt_getRecentPostTitles($args)
    {
        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        if (isset($args[3])) {
            $query = array('numberposts' => absint($args[3]));
        } else {
            $query = array();
        }

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'mt.getRecentPostTitles');

        $posts_list = wp_get_recent_posts($query);

        if (!$posts_list) {
            $this->error = new IXR_Error(500, __('Either there are no posts, or something went wrong.'));
            return $this->error;
        }

        $recent_posts = array();

        foreach ($posts_list as $entry) {
            if (!current_user_can('edit_post', $entry['ID'])) {
                continue;
            }

            $post_date = $this->_convert_date($entry['post_date']);
            $post_date_gmt = $this->_convert_date_gmt($entry['post_date_gmt'], $entry['post_date']);

            $recent_posts[] = array(
                'dateCreated' => $post_date,
                'userid' => $entry['post_author'],
                'postid' => (string)$entry['ID'],
                'title' => $entry['post_title'],
                'post_status' => $entry['post_status'],
                'date_created_gmt' => $post_date_gmt,
            );
        }

        return $recent_posts;
    }

    /**
     * Retrieve list of all categories on blog.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $blog_id (unused)
     * @type string $username
     * @type string $password
     * }
     * @return array|IXR_Error
     * @since 1.5.0
     *
     */
    public function mt_getCategoryList($args)
    {
        $this->escape($args);

        $username = $args[1];
        $password = $args[2];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        if (!current_user_can('edit_posts')) {
            return new IXR_Error(401, __('Sorry, you must be able to edit posts on this site in order to view categories.'));
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'mt.getCategoryList');

        $categories_struct = array();

        $cats = get_categories(
            array(
                'hide_empty' => 0,
                'hierarchical' => 0,
            )
        );
        if ($cats) {
            foreach ($cats as $cat) {
                $struct = array();
                $struct['categoryId'] = $cat->term_id;
                $struct['categoryName'] = $cat->name;

                $categories_struct[] = $struct;
            }
        }

        return $categories_struct;
    }

    /**
     * Retrieve post categories.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $post_ID
     * @type string $username
     * @type string $password
     * }
     * @return array|IXR_Error
     * @since 1.5.0
     *
     */
    public function mt_getPostCategories($args)
    {
        $this->escape($args);

        $post_ID = (int)$args[0];
        $username = $args[1];
        $password = $args[2];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        if (!get_post($post_ID)) {
            return new IXR_Error(404, __('Invalid post ID.'));
        }

        if (!current_user_can('edit_post', $post_ID)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to edit this post.'));
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'mt.getPostCategories');

        $categories = array();
        $catids = wp_get_post_categories(intval($post_ID));
        // First listed category will be the primary category.
        $isPrimary = true;
        foreach ($catids as $catid) {
            $categories[] = array(
                'categoryName' => get_cat_name($catid),
                'categoryId' => (string)$catid,
                'isPrimary' => $isPrimary,
            );
            $isPrimary = false;
        }

        return $categories;
    }

    /**
     * Sets categories for a post.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $post_ID
     * @type string $username
     * @type string $password
     * @type array $categories
     * }
     * @return true|IXR_Error True on success.
     * @since 1.5.0
     *
     */
    public function mt_setPostCategories($args)
    {
        $this->escape($args);

        $post_ID = (int)$args[0];
        $username = $args[1];
        $password = $args[2];
        $categories = $args[3];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'mt.setPostCategories');

        if (!get_post($post_ID)) {
            return new IXR_Error(404, __('Invalid post ID.'));
        }

        if (!current_user_can('edit_post', $post_ID)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to edit this post.'));
        }

        $catids = array();
        foreach ($categories as $cat) {
            $catids[] = $cat['categoryId'];
        }

        wp_set_post_categories($post_ID, $catids);

        return true;
    }

    /**
     * Retrieve an array of methods supported by this server.
     *
     * @return array
     * @since 1.5.0
     *
     */
    public function mt_supportedMethods()
    {
        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'mt.supportedMethods');

        return array_keys($this->methods);
    }

    /**
     * Retrieve an empty array because we don't support per-post text filters.
     *
     * @since 1.5.0
     */
    public function mt_supportedTextFilters()
    {
        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'mt.supportedTextFilters');

        /**
         * Filters the MoveableType text filters list for XML-RPC.
         *
         * @param array $filters An array of text filters.
         * @since 2.2.0
         *
         */
        return apply_filters('xmlrpc_text_filters', array());
    }

    /**
     * Retrieve trackbacks sent to a given post.
     *
     * @param int $post_ID
     * @return array|IXR_Error
     * @since 1.5.0
     *
     * @global wpdb $wpdb WordPress database abstraction object.
     *
     */
    public function mt_getTrackbackPings($post_ID)
    {
        global $wpdb;

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'mt.getTrackbackPings');

        $actual_post = get_post($post_ID, ARRAY_A);

        if (!$actual_post) {
            return new IXR_Error(404, __('Sorry, no such post.'));
        }

        $comments = $wpdb->get_results($wpdb->prepare("SELECT comment_author_url, comment_content, comment_author_IP, comment_type FROM $wpdb->comments WHERE comment_post_ID = %d", $post_ID));

        if (!$comments) {
            return array();
        }

        $trackback_pings = array();
        foreach ($comments as $comment) {
            if ('trackback' == $comment->comment_type) {
                $content = $comment->comment_content;
                $title = substr($content, 8, (strpos($content, '</strong>') - 8));
                $trackback_pings[] = array(
                    'pingTitle' => $title,
                    'pingURL' => $comment->comment_author_url,
                    'pingIP' => $comment->comment_author_IP,
                );
            }
        }

        return $trackback_pings;
    }

    /**
     * Sets a post's publish status to 'publish'.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type int $post_ID
     * @type string $username
     * @type string $password
     * }
     * @return int|IXR_Error
     * @since 1.5.0
     *
     */
    public function mt_publishPost($args)
    {
        $this->escape($args);

        $post_ID = (int)$args[0];
        $username = $args[1];
        $password = $args[2];

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'mt.publishPost');

        $postdata = get_post($post_ID, ARRAY_A);
        if (!$postdata) {
            return new IXR_Error(404, __('Invalid post ID.'));
        }

        if (!current_user_can('publish_posts') || !current_user_can('edit_post', $post_ID)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to publish this post.'));
        }

        $postdata['post_status'] = 'publish';

        // Retain old categories.
        $postdata['post_category'] = wp_get_post_categories($post_ID);
        $this->escape($postdata);

        return wp_update_post($postdata);
    }

    /*
	 * Pingback functions.
	 * Specs on www.hixie.ch/specs/pingback/pingback
	 */

    /**
     * Retrieves a pingback and registers it.
     *
     * @param array $args {
     *     Method arguments. Note: arguments must be ordered as documented.
     *
     * @type string $pagelinkedfrom
     * @type string $pagelinkedto
     * }
     * @return string|IXR_Error
     * @since 1.5.0
     *
     */
    public function pingback_ping($args)
    {
        global $wpdb;

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'pingback.ping');

        $this->escape($args);

        $pagelinkedfrom = str_replace('&amp;', '&', $args[0]);
        $pagelinkedto = str_replace('&amp;', '&', $args[1]);
        $pagelinkedto = str_replace('&', '&amp;', $pagelinkedto);

        /**
         * Filters the pingback source URI.
         *
         * @param string $pagelinkedfrom URI of the page linked from.
         * @param string $pagelinkedto URI of the page linked to.
         * @since 3.6.0
         *
         */
        $pagelinkedfrom = apply_filters('pingback_ping_source_uri', $pagelinkedfrom, $pagelinkedto);

        if (!$pagelinkedfrom) {
            return $this->pingback_error(0, __('A valid URL was not provided.'));
        }

        // Check if the page linked to is on our site.
        $pos1 = strpos($pagelinkedto, str_replace(array('http://www.', 'http://', 'https://www.', 'https://'), '', get_option('home')));
        if (!$pos1) {
            return $this->pingback_error(0, __('Is there no link to us?'));
        }

        /*
		 * Let's find which post is linked to.
		 * FIXME: Does url_to_postid() cover all these cases already?
		 * If so, then let's use it and drop the old code.
		 */
        $urltest = parse_url($pagelinkedto);
        $post_ID = url_to_postid($pagelinkedto);
        if ($post_ID) {
            // $way
        } elseif (isset($urltest['path']) && preg_match('#p/[0-9]{1,}#', $urltest['path'], $match)) {
            // The path defines the post_ID (archives/p/XXXX).
            $blah = explode('/', $match[0]);
            $post_ID = (int)$blah[1];
        } elseif (isset($urltest['query']) && preg_match('#p=[0-9]{1,}#', $urltest['query'], $match)) {
            // The query string defines the post_ID (?p=XXXX).
            $blah = explode('=', $match[0]);
            $post_ID = (int)$blah[1];
        } elseif (isset($urltest['fragment'])) {
            // An #anchor is there, it's either...
            if (intval($urltest['fragment'])) {
                // ...an integer #XXXX (simplest case),
                $post_ID = (int)$urltest['fragment'];
            } elseif (preg_match('/post-[0-9]+/', $urltest['fragment'])) {
                // ...a post ID in the form 'post-###',
                $post_ID = preg_replace('/[^0-9]+/', '', $urltest['fragment']);
            } elseif (is_string($urltest['fragment'])) {
                // ...or a string #title, a little more complicated.
                $title = preg_replace('/[^a-z0-9]/i', '.', $urltest['fragment']);
                $sql = $wpdb->prepare("SELECT ID FROM $wpdb->posts WHERE post_title RLIKE %s", $title);
                $post_ID = $wpdb->get_var($sql);
                if (!$post_ID) {
                    // Returning unknown error '0' is better than die()'ing.
                    return $this->pingback_error(0, '');
                }
            }
        } else {
            // TODO: Attempt to extract a post ID from the given URL.
            return $this->pingback_error(33, __('The specified target URL cannot be used as a target. It either doesn&#8217;t exist, or it is not a pingback-enabled resource.'));
        }
        $post_ID = (int)$post_ID;

        $post = get_post($post_ID);

        if (!$post) { // Post not found.
            return $this->pingback_error(33, __('The specified target URL cannot be used as a target. It either doesn&#8217;t exist, or it is not a pingback-enabled resource.'));
        }

        if (url_to_postid($pagelinkedfrom) == $post_ID) {
            return $this->pingback_error(0, __('The source URL and the target URL cannot both point to the same resource.'));
        }

        // Check if pings are on.
        if (!pings_open($post)) {
            return $this->pingback_error(33, __('The specified target URL cannot be used as a target. It either doesn&#8217;t exist, or it is not a pingback-enabled resource.'));
        }

        // Let's check that the remote site didn't already pingback this entry.
        if ($wpdb->get_results($wpdb->prepare("SELECT * FROM $wpdb->comments WHERE comment_post_ID = %d AND comment_author_url = %s", $post_ID, $pagelinkedfrom))) {
            return $this->pingback_error(48, __('The pingback has already been registered.'));
        }

        // Very stupid, but gives time to the 'from' server to publish!
        sleep(1);

        $remote_ip = preg_replace('/[^0-9a-fA-F:., ]/', '', $_SERVER['REMOTE_ADDR']);

        /** This filter is documented in wp-includes/class-http.php */
        $user_agent = apply_filters('http_headers_useragent', 'WordPress/' . get_bloginfo('version') . '; ' . get_bloginfo('url'), $pagelinkedfrom);

        // Let's check the remote site.
        $http_api_args = array(
            'timeout' => 10,
            'redirection' => 0,
            'limit_response_size' => 153600, // 150 KB
            'user-agent' => "$user_agent; verifying pingback from $remote_ip",
            'headers' => array(
                'X-Pingback-Forwarded-For' => $remote_ip,
            ),
        );

        $request = wp_safe_remote_get($pagelinkedfrom, $http_api_args);
        $remote_source = wp_remote_retrieve_body($request);
        $remote_source_original = $remote_source;

        if (!$remote_source) {
            return $this->pingback_error(16, __('The source URL does not exist.'));
        }

        /**
         * Filters the pingback remote source.
         *
         * @param string $remote_source Response source for the page linked from.
         * @param string $pagelinkedto URL of the page linked to.
         * @since 2.5.0
         *
         */
        $remote_source = apply_filters('pre_remote_source', $remote_source, $pagelinkedto);

        // Work around bug in strip_tags():
        $remote_source = str_replace('<!DOC', '<DOC', $remote_source);
        $remote_source = preg_replace('/[\r\n\t ]+/', ' ', $remote_source); // normalize spaces
        $remote_source = preg_replace('/<\/*(h1|h2|h3|h4|h5|h6|p|th|td|li|dt|dd|pre|caption|input|textarea|button|body)[^>]*>/', "\n\n", $remote_source);

        preg_match('|<title>([^<]*?)</title>|is', $remote_source, $matchtitle);
        $title = isset($matchtitle[1]) ? $matchtitle[1] : '';
        if (empty($title)) {
            return $this->pingback_error(32, __('We cannot find a title on that page.'));
        }

        // Remove all script and style tags including their content.
        $remote_source = preg_replace('@<(script|style)[^>]*?>.*?</\\1>@si', '', $remote_source);
        // Just keep the tag we need.
        $remote_source = strip_tags($remote_source, '<a>');

        $p = explode("\n\n", $remote_source);

        $preg_target = preg_quote($pagelinkedto, '|');

        foreach ($p as $para) {
            if (strpos($para, $pagelinkedto) !== false) { // It exists, but is it a link?
                preg_match('|<a[^>]+?' . $preg_target . '[^>]*>([^>]+?)</a>|', $para, $context);

                // If the URL isn't in a link context, keep looking.
                if (empty($context)) {
                    continue;
                }

                // We're going to use this fake tag to mark the context in a bit.
                // The marker is needed in case the link text appears more than once in the paragraph.
                $excerpt = preg_replace('|\</?wpcontext\>|', '', $para);

                // prevent really long link text
                if (strlen($context[1]) > 100) {
                    $context[1] = substr($context[1], 0, 100) . '&#8230;';
                }

                $marker = '<wpcontext>' . $context[1] . '</wpcontext>';  // Set up our marker.
                $excerpt = str_replace($context[0], $marker, $excerpt); // Swap out the link for our marker.
                $excerpt = strip_tags($excerpt, '<wpcontext>');         // Strip all tags but our context marker.
                $excerpt = trim($excerpt);
                $preg_marker = preg_quote($marker, '|');
                $excerpt = preg_replace("|.*?\s(.{0,100}$preg_marker.{0,100})\s.*|s", '$1', $excerpt);
                $excerpt = strip_tags($excerpt); // YES, again, to remove the marker wrapper.
                break;
            }
        }

        if (empty($context)) { // Link to target not found.
            return $this->pingback_error(17, __('The source URL does not contain a link to the target URL, and so cannot be used as a source.'));
        }

        $pagelinkedfrom = str_replace('&', '&amp;', $pagelinkedfrom);

        $context = '[&#8230;] ' . esc_html($excerpt) . ' [&#8230;]';
        $pagelinkedfrom = $this->escape($pagelinkedfrom);

        $comment_post_ID = (int)$post_ID;
        $comment_author = $title;
        $comment_author_email = '';
        $this->escape($comment_author);
        $comment_author_url = $pagelinkedfrom;
        $comment_content = $context;
        $this->escape($comment_content);
        $comment_type = 'pingback';

        $commentdata = compact(
            'comment_post_ID',
            'comment_author',
            'comment_author_url',
            'comment_author_email',
            'comment_content',
            'comment_type',
            'remote_source',
            'remote_source_original'
        );

        $comment_ID = wp_new_comment($commentdata);

        if (is_wp_error($comment_ID)) {
            return $this->pingback_error(0, $comment_ID->get_error_message());
        }

        /**
         * Fires after a post pingback has been sent.
         *
         * @param int $comment_ID Comment ID.
         * @since 0.71
         *
         */
        do_action('pingback_post', $comment_ID);

        /* translators: 1: URL of the page linked from, 2: URL of the page linked to. */
        return sprintf(__('Pingback from %1$s to %2$s registered. Keep the web talking! :-)'), $pagelinkedfrom, $pagelinkedto);
    }

    /**
     * Retrieve array of URLs that pingbacked the given URL.
     *
     * Specs on http://www.aquarionics.com/misc/archives/blogite/0198.html
     *
     * @param string $url
     * @return array|IXR_Error
     * @since 1.5.0
     *
     * @global wpdb $wpdb WordPress database abstraction object.
     *
     */
    public function pingback_extensions_getPingbacks($url)
    {
        global $wpdb;

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'pingback.extensions.getPingbacks');

        $url = $this->escape($url);

        $post_ID = url_to_postid($url);
        if (!$post_ID) {
            // We aren't sure that the resource is available and/or pingback enabled.
            return $this->pingback_error(33, __('The specified target URL cannot be used as a target. It either doesn&#8217;t exist, or it is not a pingback-enabled resource.'));
        }

        $actual_post = get_post($post_ID, ARRAY_A);

        if (!$actual_post) {
            // No such post = resource not found.
            return $this->pingback_error(32, __('The specified target URL does not exist.'));
        }

        $comments = $wpdb->get_results($wpdb->prepare("SELECT comment_author_url, comment_content, comment_author_IP, comment_type FROM $wpdb->comments WHERE comment_post_ID = %d", $post_ID));

        if (!$comments) {
            return array();
        }

        $pingbacks = array();
        foreach ($comments as $comment) {
            if ('pingback' == $comment->comment_type) {
                $pingbacks[] = $comment->comment_author_url;
            }
        }

        return $pingbacks;
    }

    /**
     * Sends a pingback error based on the given error code and message.
     *
     * @param int $code Error code.
     * @param string $message Error message.
     * @return IXR_Error Error object.
     * @since 3.6.0
     *
     */
    protected function pingback_error($code, $message)
    {
        /**
         * Filters the XML-RPC pingback error return.
         *
         * @param IXR_Error $error An IXR_Error object containing the error code and message.
         * @since 3.5.1
         *
         */
        return apply_filters('xmlrpc_pingback_error', new IXR_Error($code, $message));
    }

    public $uid;

    /**
     * 检查权限
     * @param $union
     * @param $name
     * @param $password
     * @param string $level
     * @return bool|mixed|void|WP_Error
     */
    public function access($union, $name, $password, $level = 'contributor')
    {
        $enabled = apply_filters('pre_option_enable_xmlrpc', false);
        if (false === $enabled) {
            $enabled = apply_filters('option_enable_xmlrpc', true);
        }

        $enabled = apply_filters('xmlrpc_enabled', $enabled);
        if (!$enabled) {
            $this->error = new IXR_Error(405, sprintf(__('XML-RPC services are disabled on this site.')));
            return false;
        }
        if ($this->auth_failed) {
            $user = new WP_Error('login_prevented');
        } else {
            $user = wp_authenticate($name, $password);
        }

        if (is_wp_error($user)) {
            $this->error = new IXR_Error(403, __('Incorrect username or password.'));
            $this->auth_failed = true;
            $this->error = apply_filters('xmlrpc_login_error', $this->error, $user);
            return false;
        }
        wp_set_current_user($user->ID);
        $this->uid = $user->ID;
        return $user;
    }

    /**
     * @param $args
     * @return array
     */
    public function NbGetManifest($args)
    {
        return array(
            "engineName" => "wordpress",
            "versionCode" => 16,
            "versionName" => "2.5",
            "manifest" => $args[0]
        );
    }

    /**
     * 成功
     *
     * @param $data
     * @return array
     */
    public function prosper($data)
    {
        return array(true, $data);
    }

    /**
     * 失败
     *
     * @param $message
     * @param int $code
     * @return array
     */
    public function pervert($message, $code = -1)
    {
        return array(false, [$code, $message]);
    }

    /**
     * @param $status
     * @param string $type
     * @return string
     * @noinspection PhpDuplicateSwitchCaseBodyInspection
     */
    private function toWpStatus($status, $type = 'post')
    {
        if ('post' == $type) {
            /** 文章状态 */
            switch ($status) {
                case 'waiting':
                    return 'pending';
                case 'publish':
                case 'draft':
                case 'private':
                    return $status;
                default:
                    return 'publish';
            }
        } else if ('page' == $type) {
            switch ($status) {
                case 'publish':
                case 'draft':
                case 'private':
                    return $status;
                default:
                    return 'publish';
            }
        } else if ('comment' == $type) {
            switch ($status) {
                case 'publish':
                case 'approved':
                    return 'approve';
                case 'waiting':
                    return 'hold';
                case 'spam':
                    return $status;
                default:
                    return 'approve';
            }
        }

        return '';
    }

    /**
     * @param $args
     * @return array|IXR_Error
     */
    public function NbGetUser($args)
    {
        if (!$this->minimum_args($args, 3)) {
            return $this->error;
        }
        $this->escape($args);

        $user = $this->access($args[0], $args[1], $args[2]);
        if (!$user) {
            return $this->error;
        }

        do_action('xmlrpc_call', 'kraitnabo.user.get');

        if (!current_user_can('edit_user', $this->uid)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to edit this user.'));
        }

        return $this->prosper([
            'site' => (string)$user->user_url,
            'uid' => (int)$user->ID,
            'name' => (string)$user->user_login,
            'mail' => (string)$user->user_email,
            'nickname' => (string)$user->nickname,
            'created' => strtotime($user->user_registered),
            'activated' => time(),
            'logged' => time(),
            'group' => (string)$user->roles[0],
            'token' => ""
        ]);
    }

    /**
     * @param $args
     * @return array|IXR_Error
     */
    public function NbGetStat($args)
    {
        if (!$this->minimum_args($args, 3)) {
            return $this->error;
        }

        $this->escape($args);

        $user = $this->access($args[0], $args[1], $args[2]);
        if (!$user) {
            return $this->error;
        }

        $post = wp_count_posts();
        $page = wp_count_posts('page');

        $stat = array(
            "post" => array(
                "all" => $post->publish + $post->pending + $post->draft + $post->future + $post->private + $post->inherit,
                "publish" => $post->publish,
                "waiting" => $post->pending,
                "draft" => $post->draft,
                "hidden" => $post->future,
                "private" => $post->private,
                "textSize" => "0"
            ),
            "page" => array(
                "all" => $page->publish + $page->pending + $page->draft + $page->future + $page->private + $page->inherit,
                "publish" => $page->publish,
                "hidden" => $page->future,
                "draft" => $page->draft,
                "textSize" => "0"
            ),
            "comment" => array(
                "all" => "0",
                "me" => "0",
                "publish" => "0",
                "waiting" => "0",
                "spam" => "0",
                "textSize" => "0",
            ),
            "categories" => array(
                "all" => "0",
                "archive" => "0"
            ),
            "tags" => array(
                "all" => "0",
                "archive" => "0"
            ),
            "medias" => array(
                "all" => "0",
                "archive" => "0"
            )
        );

        return $this->prosper(json_encode(
            $stat, JSON_UNESCAPED_UNICODE
        ));
    }

    public function NbGetOptions($args)
    {
        $this->escape($args);

        $username = $args[1];
        $password = $args[2];
        $options = isset($args[3]) ? (array)$args[3] : array();

        $user = $this->login($username, $password);
        if (!$user) {
            return $this->error;
        }

        $nb = array(
            "generator" => "db_version",
            "title" => "blogname",
            "siteUrl" => "siteurl",
            "description" => "blogdescription",
//            "keywords" => "",
//            "theme" => "",
//            "allowRegister" => "",
//            "allowXmlRpc" => "",
//            "markdown" => "",
//            "xmlrpcMarkdown" => ""
        );

        $struct = array();
        foreach ($options as $op) {
            $option = $nb[$op];
            // Is the value static or dynamic?
            $value = get_option($option);
            if (!empty($value)) {
                $struct[] = array(
                    "" . $op,
                    "1",
                    "" . $value
                );
            }
        }
        return $this->prosper($struct);
    }

    /**
     * @param $struct
     * @return array
     */
    private function structNoteTemplate($struct)
    {
        return array(
            "post_type" => $struct["type"],
            "post_status" => $this->toWpStatus($struct["status"]),
            "post_title" => $struct["title"],
            "post_content" => $struct["content"],
            "post_password" => $struct["password"],
            'post_author' => null,
            'post_excerpt' => null,
            'post_date' => null,
            'post_date_gmt' => null,
            'post_format' => null,
            'post_name' => $struct["slug"],
            'post_thumbnail' => null,
            'post_parent' => null,
            'ping_status' => $struct["allow_pings"] == 1 ? "open" : "closed",
            'comment_status' => $struct["allow_comments"] == 1 ? "open" : "closed",
            'custom_fields' => null,
//            'terms_names' => $note["tags"],
//            'terms' => $note["categories"],
            'sticky' => null,
            'enclosure' => null,
            'ID' => $struct["nid"]
        );
    }

    /**
     * @param $args
     * @return array|IXR_Error
     */
    public function NbNewPost($args)
    {
        if (!$this->minimum_args($args, 4)) {
            return $this->error;
        }

        $this->escape($args);
        $content_struct = $this->structNoteTemplate($args[3]);

        $user = $this->access($args[0], $args[1], $args[2]);
        if (!$user) {
            return $this->error;
        }

        if (isset($content_struct['post_date']) && !($content_struct['post_date'] instanceof IXR_Date)) {
            $content_struct['post_date'] = $this->_convert_date($content_struct['post_date']);
        }

        if (isset($content_struct['post_date_gmt']) && !($content_struct['post_date_gmt'] instanceof IXR_Date)) {
            if ('0000-00-00 00:00:00' === $content_struct['post_date_gmt'] || isset($content_struct['post_date'])) {
                unset($content_struct['post_date_gmt']);
            } else {
                $content_struct['post_date_gmt'] = $this->_convert_date($content_struct['post_date_gmt']);
            }
        }

        do_action('xmlrpc_call', 'kraitnabo.post.new');
        unset($content_struct['ID']);

        $highlightId = $this->_insert_post($user, $content_struct);

        return $this->prosper([
            'nid' => (int)$highlightId
        ]);
    }

    /**
     * @param $args
     * @return array|IXR_Error|string
     */
    public function NbEditPost($args)
    {
        if (!$this->minimum_args($args, 4)) {
            return $this->error;
        }

        $this->escape($args);
        $struct = $args[3];
        $post_id = $struct['nid'];

        $user = $this->access($args[0], $args[1], $args[2]);
        if (!$user) {
            return $this->error;
        }

        $content_struct = $this->structNoteTemplate($struct);
        do_action('xmlrpc_call', 'kraitnabo.post.edit');
        $post = get_post($post_id, ARRAY_A);

        if (empty($post['ID'])) {
            return new IXR_Error(404, __('Invalid post ID.'));
        }

        if (isset($content_struct['if_not_modified_since'])) {
            if (mysql2date('U', $post['post_modified_gmt']) > $content_struct['if_not_modified_since']->getTimestamp()) {
                return new IXR_Error(409, __('There is a revision of this post that is more recent.'));
            }
        }

        $post['post_date'] = $this->_convert_date($post['post_date']);

        if ('0000-00-00 00:00:00' === $post['post_date_gmt'] || isset($content_struct['post_date'])) {
            unset($post['post_date_gmt']);
        } else {
            $post['post_date_gmt'] = $this->_convert_date($post['post_date_gmt']);
        }

        if (!isset($content_struct['post_date'])) {
            unset($post['post_date']);
        }

        $this->escape($post);
        $merged_content_struct = array_merge($post, $content_struct);

        $retval = $this->_insert_post($user, $merged_content_struct);
        if ($retval instanceof IXR_Error) {
            return $retval;
        }

        return $this->prosper([
            'nid' => (int)$post_id
        ]);
    }

    /**
     * @param $args
     * @return array|IXR_Error
     */
    public function NbEditPage($args)
    {
        if (!$this->minimum_args($args, 4)) {
            return $this->error;
        }

        $this->escape($args);
        $struct = $args[3];
        $page_id = $struct['nid'];

        $user = $this->access($args[0], $args[1], $args[2]);
        if (!$user) {
            return $this->error;
        }

        do_action('xmlrpc_call', 'kraitnabo.page.edit');

        // Get the page data and make sure it is a page.
        $actual_page = get_post($page_id, ARRAY_A);
        if (!$actual_page || ('page' !== $actual_page['post_type'])) {
            return new IXR_Error(404, __('Sorry, no such page.'));
        }

        if (!current_user_can('edit_page', $page_id)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to edit this page.'));
        }

        $content_struct = $struct;
        $content_struct['type'] = 'page';
        $publish = isset($args[4]) ? $args[4] : 0;
        $postdata = $actual_page;

        if (!in_array($postdata['post_type'], array('post', 'page'))) {
            return new IXR_Error(401, __('Invalid post type.'));
        }

        $this->escape($postdata);

        $ID = $postdata['ID'];
        $post_content = $struct['content'];
        $post_title = $struct['title'];
        $post_excerpt = $postdata['post_excerpt'];
        $post_password = isset($struct['password']) ? $struct['password'] : null;
        $post_parent = $postdata['post_parent'];
        $post_type = $postdata['post_type'];
        $menu_order = $postdata['menu_order'];
        $ping_status = $postdata['ping_status'];
        $comment_status = $postdata['comment_status'];

        $post_name = $postdata['post_name'];
        if (isset($content_struct['slug'])) {
            $post_name = $content_struct['slug'];
        }

        if (isset($content_struct['password'])) {
            $post_password = $content_struct['password'];
        }

//        if (isset($content_struct['wp_page_parent_id'])) {
//            $post_parent = $content_struct['wp_page_parent_id'];
//        }

        if (isset($content_struct['order'])) {
            $menu_order = $content_struct['order'];
        }

        $page_template = null;
        if (!empty($content_struct['template'])) {
            $page_template = $content_struct['template'];
        }

        $post_author = $postdata['post_author'];

        if (isset($content_struct['allow_comments'])) {
            switch ((int)$content_struct['allow_comments']) {
                case 0:
                case 2:
                    $comment_status = 'closed';
                    break;
                case 1:
                    $comment_status = 'open';
                    break;
                default:
                    $comment_status = get_default_comment_status($post_type);
                    break;
            }

        }

        if (isset($content_struct['allow_pings'])) {
            switch ((int)$content_struct['allow_pings']) {
                case 0:
                    $ping_status = 'closed';
                    break;
                case 1:
                    $ping_status = 'open';
                    break;
                default:
                    $ping_status = get_default_comment_status($post_type, 'pingback');
                    break;
            }
        }

        $post_category = array();
        if (isset($content_struct['categories'])) {
            $catnames = $content_struct['categories'];
            if (is_array($catnames)) {
                foreach ($catnames as $cat) {
                    $post_category[] = get_cat_ID($cat);
                }
            }
        }

        $post_status = $publish ? 'publish' : 'draft';

        if (isset($content_struct["status"])) {
            switch ($this->toWpStatus($content_struct["status"], "page")) {
                case 'draft':
                case 'pending':
                case 'private':
                case 'publish':
                    $post_status = $content_struct["status"];
                    break;
                default:
                    $post_status = $publish ? 'publish' : 'draft';
                    break;
            }
        }

        $tags_input = isset($content_struct['tags']) ? $content_struct['tags'] : null;

        if ('publish' === $post_status || 'private' === $post_status) {
            if ('page' == $post_type && !current_user_can('publish_pages')) {
                return new IXR_Error(401, __('Sorry, you are not allowed to publish this page.'));
            } elseif (!current_user_can('publish_posts')) {
                return new IXR_Error(401, __('Sorry, you are not allowed to publish this post.'));
            }
        }

        $post_date = $postdata['post_date'];
        $post_date_gmt = $postdata['post_date_gmt'];

        $newpost = compact('ID', 'post_content', 'post_title', 'post_category', 'post_status', 'post_excerpt', 'comment_status', 'ping_status', 'edit_date', 'post_date', 'post_date_gmt', 'to_ping', 'post_name', 'post_password', 'post_parent', 'menu_order', 'post_author', 'tags_input', 'page_template');
        $result = wp_update_post($newpost, true);
        if (is_wp_error($result)) {
            return new IXR_Error(500, $result->get_error_message());
        }

        if (!$result) {
            return new IXR_Error(500, __('Sorry, the post could not be updated.'));
        }

//            if (isset($content_struct['custom_fields'])) {
//                $this->set_custom_fields($post_ID, $content_struct['custom_fields']);
//            }

        // Handle enclosures.
        $thisEnclosure = isset($content_struct['enclosure']) ? $content_struct['enclosure'] : null;
        $this->add_enclosure_if_new($page_id, $thisEnclosure);
        $this->attach_uploads($ID, $post_content);

        return $this->prosper([
            'nid' => (int)$ID
        ]);
    }

    /**
     * @param $args
     * @return array|IXR_Error
     */
    public function NbGetPage($args)
    {
        if (!$this->minimum_args($args, 4)) {
            return $this->error;
        }

        $this->escape($args);
        $page_id = (int)$args[3];
//        $struct = $args[4];

        $user = $this->access($args[0], $args[1], $args[2]);
        if (!$user) {
            return $this->error;
        }

        $page = get_post($page_id);
        if (!$page) {
            return new IXR_Error(404, __('Invalid post ID.'));
        }

        if (!current_user_can('edit_page', $page_id)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to edit this page.'));
        }

        do_action('xmlrpc_call', 'kraitnabo.page.get');

        // If we found the page then format the data.
        if ($page->ID && ('page' === $page->post_type)) {
            return $this->prosper([
                'nid' => (int)$page->ID,
                'title' => (string)$page->post_title,
                'content' => (string)$page->post_content,
                'authorId' => (int)$user->ID,

                'slug' => (string)$page->post_name,
                'order' => 0,
                'type' => "page",
                'status' => "publish",
                'password' => (string)$page->post_password,
                'parentId' => (int)$page->post_parent,
                'template' => "",

                'allowComment' => comments_open($page->ID) ? 1 : 0,
                'allowPing' => pings_open($page->ID) ? 1 : 0,
                'allowFeed' => 0,

                'created' => strtotime($page->post_date) - 28800,
                'modified' => strtotime($page->post_date) - 28800,

                'permalink' => (string)get_permalink($page->ID),
                'fields' => json_encode([]),
                'tags' => "",
                'categories' => ""
            ]);
        } else {
            return new IXR_Error(404, __('Sorry, no such page.'));
        }
    }

    /**
     * @param $args
     * @return array|IXR_Error
     */
    public function NbGetPost($args)
    {
        if (!$this->minimum_args($args, 4)) {
            return $this->error;
        }

        $this->escape($args);
        $cid = (int)$args[3];
        $struct = $args[4];

        $user = $this->access($args[0], $args[1], $args[2]);
        if (!$user) {
            return $this->error;
        }

        do_action('xmlrpc_call', 'kraitnabo.post.get');

        $post = get_post($cid, ARRAY_A);

        if (empty($post['ID'])) {
            return new IXR_Error(404, __('Invalid post ID.'));
        }

        if (!current_user_can('edit_post', $cid)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to edit this post.'));
        }

        return $this->prosper($this->commonNoteStruct($post, $struct));
    }

    /**
     * @param $args
     * @return array|IXR_Error
     */
    public function NbDeletePost($args)
    {
        if (!$this->minimum_args($args, 4)) {
            return $this->error;
        }

        $this->escape($args);
        $post_id = (int)$args[3];

        $user = $this->access($args[0], $args[1], $args[2]);
        if (!$user) {
            return $this->error;
        }

        do_action('xmlrpc_call', 'kraitnabo.post.delete');

        $post = get_post($post_id, ARRAY_A);
        if (empty($post['ID'])) {
            return new IXR_Error(404, __('Invalid post ID.'));
        }

        if (!current_user_can('delete_post', $post_id)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to delete this post.'));
        }

        $result = wp_delete_post($post_id);

        if (!$result) {
            return new IXR_Error(500, __('Sorry, the post could not be deleted.'));
        }

        return $this->prosper("删除成功");
    }

    /**
     * @param $args
     * @return array|IXR_Error
     */
    public function NbGetPosts($args)
    {
        if (!$this->minimum_args($args, 3)) {
            return $this->error;
        }

        $this->escape($args);
        $struct = $args[3];

        $user = $this->access($args[0], $args[1], $args[2]);
        if (!$user) {
            return $this->error;
        }

        do_action('xmlrpc_call', 'kraitnabo.posts.get');

        $query = array();
        $post_type = get_post_type_object('post');

        if (!current_user_can($post_type->cap->edit_posts)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to edit posts in this post type.'));
        }

        $query['post_type'] = $post_type->name;

        if (!empty($struct['status'])) {
            $query['post_status'] = $this->toWpStatus($struct['status']);
        }

        if (isset($struct['number'])) {
            $query['numberposts'] = absint($struct['number']);
        }

        if (isset($struct['offset'])) {
            $query['offset'] = absint($struct['offset']);
        }

//        if (isset($filter['orderby'])) {
//            $query['orderby'] = $filter['orderby'];
//
//            if (isset($filter['order'])) {
//                $query['order'] = $filter['order'];
//            }
//        }
//

        if (isset($struct['keywords'])) {
            $query['s'] = $struct['keywords'];
        }

        $posts_list = wp_get_recent_posts($query);
        $posts = array();

        if (!$posts_list) {
            return array(true, $posts);
        }

        foreach ($posts_list as $post) {
            if (!current_user_can('edit_post', $post['ID'])) {
                continue;
            }
            $posts[] = $this->commonNoteStruct($post, $struct);
        }
        return array(true,
            $posts
        );
    }

    /**
     * @param $args
     * @return array|IXR_Error
     */
    public function NbGetPages($args)
    {
        if (!$this->minimum_args($args, 3)) {
            return $this->error;
        }

        $this->escape($args);
//        $struct = $args[3];
        $num_pages = 20;

        $user = $this->access($args[0], $args[1], $args[2]);
        if (!$user) {
            return $this->error;
        }

        if (!current_user_can('edit_pages')) {
            return new IXR_Error(401, __('Sorry, you are not allowed to edit pages.'));
        }

        /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
        do_action('xmlrpc_call', 'kraitnabo.pages.get');

        $pages = get_posts(
            array(
                'post_type' => 'page',
                'post_status' => 'any',
                'numberposts' => $num_pages,
            )
        );
        $num_pages = count($pages);
        $pages_struct = array();

        if ($num_pages >= 1) {
            foreach ($pages as $page) {
                if (current_user_can('edit_page', $page->ID)) {
                    $pages_struct[] = array(
                        'nid' => (int)$page->ID,
                        'title' => (string)$page->post_title,
                        'content' => (string)$page->post_content,
                        'authorId' => (int)$user->ID,

                        'slug' => (string)$page->post_name,
                        'order' => 0,
                        'type' => "page",
                        'status' => "publish",
                        'password' => (string)$page->post_password,
                        'parentId' => (int)$page->post_parent,
                        'template' => "",

                        'allowComment' => comments_open($page->ID) ? 1 : 0,
                        'allowPing' => pings_open($page->ID) ? 1 : 0,
                        'allowFeed' => 0,

                        'created' => strtotime($page->post_date) - 28800,
                        'modified' => strtotime($page->post_date) - 28800,

                        'permalink' => (string)get_permalink($page->ID),
                        'fields' => json_encode([]),
                        'tags' => "",
                        'categories' => ""
                    );
                }
            }
        }

        return array(
            true,
            $pages_struct
        );
    }

    /**
     * @param $args
     * @return array|IXR_Error
     */
    public function NbEditComment($args)
    {
        if (!$this->minimum_args($args, 5)) {
            return $this->error;
        }

        $this->escape($args);
        $comment_ID = (int)$args[3];
        $content_struct = $args[4];

        $user = $this->access($args[0], $args[1], $args[2]);
        if (!$user) {
            return $this->error;
        }

        if (!get_comment($comment_ID)) {
            return new IXR_Error(404, __('Invalid comment ID.'));
        }

        if (!current_user_can('edit_comment', $comment_ID)) {
            return new IXR_Error(403, __('Sorry, you are not allowed to moderate or edit this comment.'));
        }

        do_action('xmlrpc_call', 'kraitnabo.comment.edit');
        $comment = array(
            'comment_ID' => $comment_ID,
        );

        if (isset($content_struct['status'])) {
            $statuses = get_comment_statuses();
            $statuses = array_keys($statuses);
            $content_struct['status'] = $this->toWpStatus($content_struct['status'], "comment");

            if (!in_array($content_struct['status'], $statuses)) {
                return new IXR_Error(401, __('Invalid comment status.'));
            }

            $comment['comment_approved'] = $content_struct['status'];
        }

        if (isset($content_struct['message'])) {
            $comment['comment_content'] = $content_struct['message'];
        }

        if (isset($content_struct['author'])) {
            $comment['comment_author'] = $content_struct['author'];
        }

        if (isset($content_struct['site'])) {
            $comment['comment_author_url'] = $content_struct['site'];
        }

        if (isset($content_struct['mail'])) {
            $comment['comment_author_email'] = $content_struct['mail'];
        }

        $result = wp_update_comment($comment);
        if (is_wp_error($result)) {
            return new IXR_Error(500, __("Sorry"));
        }

        if (!$result) {
            return new IXR_Error(500, __('Sorry, the comment could not be updated.'));
        }

        return array(true, null);
    }

    /**
     * @param $args
     * @return array|IXR_Error
     */
    public function NbNewComment($args)
    {
        if (!$this->minimum_args($args, 5)) {
            return $this->error;
        }

        $this->escape($args);
        $post = $args[3];
        $content_struct = $args[4];

        $user = $this->access($args[0], $args[1], $args[2]);
        if (!$user) {
            return $this->error;
        }

        $allow_anon = apply_filters('xmlrpc_allow_anonymous_comments', false);

        if (!$user) {
            $logged_in = false;
            if ($allow_anon && get_option('comment_registration')) {
                return new IXR_Error(403, __('Sorry, you must be logged in to comment.'));
            } elseif (!$allow_anon) {
                return $this->error;
            }
        } else {
            $logged_in = true;
        }

        if (is_numeric($post)) {
            $post_id = absint($post);
        } else {
            $post_id = url_to_postid($post);
        }

        if (!$post_id) {
            return new IXR_Error(404, __('Invalid post ID.'));
        }

        if (!get_post($post_id)) {
            return new IXR_Error(404, __('Invalid post ID.'));
        }

        if (!comments_open($post_id)) {
            return new IXR_Error(403, __('Sorry, comments are closed for this item.'));
        }

        if (empty($content_struct['message'])) {
            return new IXR_Error(403, __('Comment is required.'));
        }

        $comment = array(
            'comment_post_ID' => $post_id,
            'comment_content' => $content_struct['message'],
        );

        if ($logged_in) {
            $display_name = $user->display_name;
            $user_email = $user->user_email;
            $user_url = $user->user_url;

            $comment['comment_author'] = $this->escape($display_name);
            $comment['comment_author_email'] = $this->escape($user_email);
            $comment['comment_author_url'] = $this->escape($user_url);
            $comment['user_ID'] = $user->ID;
        } else {
            $comment['comment_author'] = '';
            if (isset($content_struct['author'])) {
                $comment['comment_author'] = $content_struct['author'];
            }

            $comment['comment_author_email'] = '';
            if (isset($content_struct['mail'])) {
                $comment['comment_author_email'] = $content_struct['mail'];
            }

            $comment['comment_author_url'] = '';
            if (isset($content_struct['site'])) {
                $comment['comment_author_url'] = $content_struct['site'];
            }

            $comment['user_ID'] = 0;

            if (get_option('require_name_email')) {
                if (6 > strlen($comment['comment_author_email']) || '' == $comment['comment_author']) {
                    return new IXR_Error(403, __('Comment author name and email are required.'));
                } elseif (!is_email($comment['comment_author_email'])) {
                    return new IXR_Error(403, __('A valid email address is required.'));
                }
            }
        }

        $comment['comment_parent'] = isset($content_struct['parentId']) ? absint($content_struct['parentId']) : 0;

        do_action('xmlrpc_call', 'kraitnabo.comment.new');

        $comment_ID = wp_new_comment($comment, true);
        if (is_wp_error($comment_ID)) {
            return new IXR_Error(403, $comment_ID->get_error_message());
        }

        if (!$comment_ID) {
            return new IXR_Error(403, __('Something went wrong.'));
        }

        $callback = [
            "oid" => (int)$comment_ID
        ];

        return $this->prosper($callback);
    }

    /**
     * @param $args
     * @return array|IXR_Error
     */
    public function NbGetComments($args)
    {
        if (!$this->minimum_args($args, 4)) {
            return $this->error;
        }

        $this->escape($args);
        $struct = $args[3];

        $user = $this->access($args[0], $args[1], $args[2]);
        if (!$user) {
            return $this->error;
        }

        do_action('xmlrpc_call', 'kraitnabo.comments.get');

        if ($struct['status'] == "all") {
            $status = '';
        } else {
            $status = $this->toWpStatus($struct['status'], "comment");
        }

        if (!current_user_can('moderate_comments') && 'approve' !== $status) {
            return new IXR_Error(401, __('Invalid comment status.'));
        }

        $post_id = '';
        if (isset($struct['nid'])) {
            $post_id = absint($struct['nid']);
        }

        $post_type = '';
//        if (isset($struct['post_type'])) {
//            $post_type_object = get_post_type_object($struct['post_type']);
//            if (!$post_type_object || !post_type_supports($post_type_object->name, 'comments')) {
//                return new IXR_Error(404, __('Invalid post type.'));
//            }
//            $post_type = $struct['post_type'];
//        }

        $offset = 0;
        if (isset($struct['offset'])) {
            $offset = absint($struct['offset']);
        }

        $number = 10;
        if (isset($struct['number'])) {
            $number = absint($struct['number']);
        }

        $comments = get_comments(
            array(
                'status' => $status,
                'post_id' => $post_id,
                'offset' => $offset,
                'number' => $number,
                'post_type' => $post_type,
            )
        );

        $comments_struct = array();
        if (is_array($comments)) {
            foreach ($comments as $comment) {
                $comments_struct[] = $this->commonCommentsStruct($comment);
            }
        }
        return $this->prosper($comments_struct);
    }

    /**
     * @param $args
     * @return array|IXR_Error
     */
    public function NbNewMedia($args)
    {
        global $wpdb;

        if (!$this->minimum_args($args, 4)) {
            return $this->error;
        }

        $this->escape($args);
        $data = $args[3];

        $user = $this->access($args[0], $args[1], $args[2]);
        if (!$user) {
            return $this->error;
        }

        $name = sanitize_file_name($data['name']);
        $type = $data['mime'];

        do_action('xmlrpc_call', 'kraitnabo.media.new');

        if (!current_user_can('upload_files')) {
            $this->error = new IXR_Error(401, __('Sorry, you are not allowed to upload files.'));
            return $this->error;
        }

        if (is_multisite() && upload_is_user_over_quota(false)) {
            $this->error = new IXR_Error(
                401,
                sprintf(
                /* translators: %s: Allowed space allocation. */
                    __('Sorry, you have used your space allocation of %s. Please delete some files to upload more files.'),
                    size_format(get_space_allowed() * MB_IN_BYTES)
                )
            );
            return $this->error;
        }

        $upload_err = apply_filters('pre_upload_error', false);
        if ($upload_err) {
            return new IXR_Error(500, $upload_err);
        }

        $upload = wp_upload_bits($name, null, $bits);
        if (!empty($upload['error'])) {
            /* translators: 1: File name, 2: Error message. */
            $errorString = sprintf(__('Could not write file %1$s (%2$s).'), $name, $upload['error']);
            return new IXR_Error(500, $errorString);
        }

        $post_id = 0;
        if (!empty($data['post_id'])) {
            $post_id = (int)$data['post_id'];

            if (!current_user_can('edit_post', $post_id)) {
                return new IXR_Error(401, __('Sorry, you are not allowed to edit this post.'));
            }
        }

        $attachment = array(
            'post_title' => $name,
            'post_content' => '',
            'post_type' => 'attachment',
            'post_parent' => $post_id,
            'post_mime_type' => $type,
            'guid' => $upload['url'],
        );

        // Save the data.
        $id = wp_insert_attachment($attachment, $upload['file'], $post_id);
        wp_update_attachment_metadata($id, wp_generate_attachment_metadata($id, $upload['file']));

        $struct = $this->_prepare_media_item(get_post($id));

        // Deprecated values.
//        $struct['id'] = $struct['attachment_id'];
//        $struct['file'] = $struct['title'];
//        $struct['url'] = $struct['link'];

        return $this->prosper([
            'name' => $struct['title'],
            'url' => $struct['link']
        ]);
    }


    /**
     * @param $args
     * @return array|IXR_Error
     */
    public function NbDeleteMedia($args)
    {
        if (!$this->minimum_args($args, 4)) {
            return $this->error;
        }

        $this->escape($args);
        $struct = $args[3];
        $post_id = (int)$struct["list"][0];

        $user = $this->access($args[0], $args[1], $args[2]);
        if (!$user) {
            return $this->error;
        }

        do_action('xmlrpc_call', 'kraitnabo.media.delete');

        $post = get_post($post_id, ARRAY_A);
        if (empty($post['ID'])) {
            return new IXR_Error(404, __('Invalid post ID.'));
        }

        if (!current_user_can('delete_post', $post_id)) {
            return new IXR_Error(401, __('Sorry, you are not allowed to delete this post.'));
        }

        $result = wp_delete_post($post_id);

        if (!$result) {
            return new IXR_Error(500, __('Sorry, the post could not be deleted.'));
        }

        return $this->prosper("删除文件成功");
    }

    /**
     * @param $args
     * @return array|IXR_Error
     */
    public function NbGetMedias($args)
    {
        if (!$this->minimum_args($args, 4)) {
            return $this->error;
        }

        $this->escape($args);
        $struct = $args[3];

        $user = $this->access($args[0], $args[1], $args[2]);
        if (!$user) {
            return $this->error;
        }

        if (!current_user_can('upload_files')) {
            return new IXR_Error(401, __('Sorry, you are not allowed to upload files.'));
        }

        do_action('xmlrpc_call', 'kraitnabo.medias.get');

        $parent_id = (isset($struct['parent'])) ? absint($struct['parent']) : '';
        $mime_type = (isset($struct['mime'])) ? $struct['mime'] : '';
        $offset = (isset($struct['offset'])) ? absint($struct['offset']) : 0;
        $number = (isset($struct['number'])) ? absint($struct['number']) : 10;

        $attachments = get_posts(
            array(
                'post_type' => 'attachment',
                'post_parent' => $parent_id,
                'offset' => $offset,
                'numberposts' => $number,
                'post_mime_type' => $mime_type,
            )
        );

        $attachments_struct = array();

        foreach ($attachments as $media_item) {
            $attachments_struct[] = array(
                'mid' => (int)$media_item->ID,
                'title' => (string)$media_item->post_title,
                'slug' => (string)$media_item->post_name,
                'size' => 0,
                'link' => (string)wp_get_attachment_url($media_item->ID),
                'path' => (string)wp_get_attachment_url($media_item->ID),
                'mime' => (string)$media_item->post_mime_type,
                'desc' => (string)$media_item->post_content,
                'created' => strtotime($media_item->post_date) - 28800,

                'parentId' => 0,
                'parentType' => "page",
                'parentTitle' => (string)$media_item->post_title
            );
        }

        return $this->prosper($attachments_struct);
    }

    /**
     * @param $args
     * @return array|IXR_Error
     */
    public function NbGetCategories($args)
    {
        if (!$this->minimum_args($args, 3)) {
            return $this->error;
        }

        $this->escape($args);

        $user = $this->access($args[0], $args[1], $args[2]);
        if (!$user) {
            return $this->error;
        }

        if (!current_user_can('edit_posts')) {
            return new IXR_Error(401, __('Sorry, you must be able to edit posts on this site in order to view categories.'));
        }

        do_action('xmlrpc_call', 'kraitnabo.categories.get');

        $categories_struct = array();
        $cats = get_categories(array('get' => 'all'));
        if ($cats) {
            foreach ($cats as $cat) {
                $cats[] = array(
                    'mid' => (int)$cat->term_id,
                    'name' => (string)$cat->namee,
                    'slug' => (string)$cat->slug,
                    'type' => (string)"category",
                    'desc' => (string)$cat->description,
                    'count' => (int)$cat->count,
                    'order' => 0,
                    'parentId' => (int)$cat->parent,
                    'permalink' => (string)get_tag_link($cat->term_id)
                );
            }
        }

        return $this->prosper($categories_struct);
    }

    /**
     * @param $args
     * @return array|IXR_Error
     */
    public function NbGetTags($args)
    {
        if (!$this->minimum_args($args, 3)) {
            return $this->error;
        }

        $this->escape($args);

        $user = $this->access($args[0], $args[1], $args[2]);
        if (!$user) {
            return $this->error;
        }

        if (!current_user_can('edit_posts')) {
            return new IXR_Error(401, __('Sorry, you must be able to edit posts on this site in order to view tags.'));
        }

        do_action('xmlrpc_call', 'kraitnabo.tags.get');

        $tags = array();

        $all_tags = get_tags();
        if ($all_tags) {
            foreach ((array)$all_tags as $tag) {
                $tags[] = array(
                    'mid' => (int)$tag->term_id,
                    'name' => (string)$tag->namee,
                    'slug' => (string)$tag->slug,
                    'type' => (string)"tag",
                    'desc' => (string)$tag->description,
                    'count' => (int)$tag->count,
                    'order' => 0,
                    'parentId' => (int)$tag->parent,
                    'permalink' => (string)get_tag_link($tag->term_id)
                );
            }
        }

        return $this->prosper($tags);
    }

    /**
     * @param $comment
     * @return array
     */
    public function commonCommentsStruct($comment)
    {
        if ('0' == $comment->comment_approved) {
            $comment_status = 'hold';
        } elseif ('spam' == $comment->comment_approved) {
            $comment_status = 'spam';
        } elseif ('1' == $comment->comment_approved) {
            $comment_status = 'approve';
        } else {
            $comment_status = $comment->comment_approved;
        }
        return $this->prosper([
            'oid' => (int)$comment->comment_ID,
            'nid' => (int)$comment->comment_post_ID,
            'author' => (string)$comment->comment_author,
            'mail' => (string)$comment->comment_author_email,
            'site' => (string)$comment->comment_author_url,
            'message' => (string)$comment->comment_content,

            'authorId' => (int)$comment->user_id,
            'ownerId' => (int)$comment->user_id,

            'agent' => "",
            'address' => (string)$comment->comment_author_IP,

            'type' => (string)$comment->comment_type,
            'status' => (string)$this->toNbStatus($comment_status, "comment"),
            'parentId' => (string)$comment->comment_parent,
            'parentTitle' => (string)get_the_title($comment->comment_post_ID),
            'permalink' => (string)get_comment_link($comment),
            'created' => strtotime($comment->comment_date) - 28800,
        ]);
    }

    /**
     * @param $status
     * @param string $type
     * @return string
     * @noinspection PhpDuplicateSwitchCaseBodyInspection
     */
    public function toNbStatus($status, $type = 'post')
    {
        if ('post' == $type) {
            /** 文章状态 */
            switch ($status) {
                case 'pending':
                    return 'waiting';
                case 'publish':
                case 'draft':
                case 'private':
                case 'waiting':
                    return $status;
                default:
                    return 'publish';
            }
        } else if ('page' == $type) {
            switch ($status) {
                case 'publish':
                case 'draft':
                case 'private':
                    return $status;
                default:
                    return 'publish';
            }
        } else if ('comment' == $type) {
            switch ($status) {
                case 'approve':
                case 'publish':
                case 'approved':
                    return 'approved';
                case 'hold':
                case 'waiting':
                    return 'waiting';
                case 'spam':
                    return $status;
                default:
                    return 'approved';
            }
        }

        return '';
    }

    /**
     * 获取分类和标签的字符串
     * @param int $cid
     * @param boolean $isCategory
     * @return string
     */
    public function commonMetasNames($cid, $isCategory)
    {
        if ($isCategory) {
            $metas = get_the_category($cid);
        } else {
            $metas = wp_get_post_tags($cid);
        }
        $meta = array();
        if ($metas) {
            foreach ($metas as $m) {
                $meta[] = $m->name;
            }
        }
        return implode(",", $meta);
    }

    /**
     * 统一解析笔记
     * @param $post
     * @param $struct
     * @return array
     */
    public function commonNoteStruct($post, $struct)
    {
        return array(
            'nid' => (int)$post['ID'],
            'title' => (string)$post['post_title'],
            'content' => (string)$post['post_content'],
            'authorId' => (int)$post['post_author'],

            'slug' => (string)$post['post_name'],
            'order' => 0,
            'type' => (string)$post['post_type'],
            'status' => (string)$this->toNbStatus($post['post_status']),
            'password' => (string)$post['post_password'],
            'parentId' => (int)$post['post_parent'],
            'template' => "",

            'allowComment' => $post['comment_status'] == "open" ? 1 : 0,
            'allowPing' => $post['ping_status'] == "open" ? 1 : 0,
            'allowFeed' => 0,

            'created' => strtotime($post['post_date']) - 28800,
            'modified' => strtotime($post['post_modified']) - 28800,

            'permalink' => (string)get_permalink($post['ID']),
            'fields' => json_encode([]),
            'tags' => (string)$this->commonMetasNames($post['ID'], false),
            'categories' => (string)$this->commonMetasNames($post['ID'], true),
        );
    }
}
